I can't find the other billion euro asset seizure right now, but here's some more that are impressive:

$673 MILLION IN CAMORRA ASSETS SEIZED
May 10th, 2011

Italian police say they have seized assets worth 600m euros (£526m) in the latest action against the Camorra. They include nearly 1,000 properties, 200 bank accounts, and several companies said to belong to the Mallardo clan associated with the Camorra, the Neapolitan-based Mafia. Several people suspected of being members of the group were arrested.

Police say the syndicate is involved in several businesses - from betting shops to pharmaceuticals. The assets include "around 900 properties, 23 companies, and 200 bank accounts" allegedly belonging to the Mallardos. Among those arrested was Feliciano Mallardo, the suspected clan boss.

"The clan's companies had seized control of entire economic sectors: from the production and distribution of coffee to betting shops to the wholesale trade in drinks and pharmaceutical products," police said. The clan also set up "numerous real estate companies" around Rome. Barely a week goes by now without another major operation against Italy's various organised crime syndicates.

In the past year, Italian authorities have changed their tactics by going after the assets of the crime syndicates. In another operation last month, they took control of more than 40 properties, 60 plots of land, nearly 200 vehicles, and 2 football clubs being used by the mob to boost their support. The aim is to weaken the mob's financial structures, making it difficult to earn money for themselves and to pay others.

Then there's this one:

$540 MILLION IN CAMORRA ASSETS SEIZED
February 5, 2014

Around $540 million was seized in Tuesday’s sting targeting the Zaza clan of the Camorra organized crime group in Italy. Colonel Renato Chicoli of the anti-Mafia bureau in Rome said, “The investigations started 5 years ago in 2009 around Ciro Smiraglia, an entrepreneur who managed a huge flow of money in Rome.” He said Smiraglia, who was arrested on February 4th, is the nephew of the deceased organized crime boss Michele Zaza, the founder of the Zaza clan.

The clan’s current leader is Salvatore Zaza, who is serving a term in Tolmezzo jail. Stefano Zaza, Salvatore Zaza’s son, was arrested in Naples. Police also arrested a nurse working in Tolmezzo jail for allegedly smuggling a SIM card to allow the elder Zaza to “keep working” from jail. 2 members of the Naples police force are under house arrest because of the sting.
Police linked a network of companies to Smiraglia, indicating that Rome is still one of the major destinations for the money the Zaza clan collects from drug smuggling and extortion. Police have arrested 28 people and are still seeking 1 fugitive. All of them are charged with organized crime association, fraud, and extortion.

“The operation was actually an attack on the clan on 2 fronts,” explained Chicoli. “In Naples the police arrested 13 people, all members of the clan, that kept the Fuorigrotta neighborhood under control through extortion and drug smuggling. That money went to Rome, where Smiraglia made it grow.”

In Rome, Smiraglia’s network allegedly included 2 officials of the Agenzia delle Entrate tax collecting authority, who helped the group evade taxes from cars brought in from Germany, a bank director who gave inside information on potential clients, and a number of Smiraglia’s relatives.

Among the seized goods is property in Rome, Gorizia, Genova, and Caserta. Police have seized 20 companies, including those involved in the construction, hotel, car sales, financial management, gambling, and racehorse management industries.

In Rome, authorities seized 3 4-star hotels (the G Hotel, the Abitart, and the Bellambriana) as well as the smaller Joy Hotel and Mood club, a center city disco, because they believed they are under the Zaza clan’s control. Authorities also seized dozens of bank accounts, several cars, a large yacht, and 18 racehorses, some of which are sons of the champion “Varenne.”

Then there's this one:

$23 MILLION IN COSA NOSTRA ASSETS SEIZED; $67 MILLION IN CAMORRA ASSETS SEIZED
July 15, 2018

Sicilian police moved to confiscate an array of assets including 65 properties and 19 cars from a notorious Mafia boss as authorities underlined the new Italian government's pledge to crackdown on organized crime. Police published pictures of a villa with a vast swimming pool and panoramic views overlooking Palermo, one of a handful of assets worth as much as €21 million (£18 million) seized from Mafia boss Pietro Formoso.

Formoso is a prominent mobster from the Misilmeri clan of Cosa Nostra, the Sicilian Mafia, who made his money from international drug smuggling and forcing Sicilian supermarkets to use meat supplied by the underworld.

Gen. Giancarlo Trotta, the commanding officer of the finance police who seized the assets, said: “This is a new blow against Mafia infiltration of the legal economy and against the Mafia that damages companies who respect the rules.” This will go some way in underlining the new populist Italian government’s claim to be spearheading a new crackdown on organized crime. Formoso was arrested before the coalition of the League and the 5 Star Movement took office.

Matteo Salvini, the Interior Minister and leader of the hard-Right League party, earlier this month called television crews to film him swimming in another gangster’s confiscated pool in Tuscany to highlight his determination to fight crime gangs - though that villa had been seized as long as seven years ago.

In Caserta in the province of Naples police in a separate operation early last week seized assets worth an estimated €60 million from 2 Neapolitan mobsters from the Camorra, Gaetano and his brother Silvestro Balivo, aged 54 and 64, confiscating 5 construction and medical companies, accounts in 14 banks, 13 cars and more than 100 houses and pieces of land. Mr. Salvini commented on the latest the Naples seizure by tweeting “the Mafia disgusts me”. Italian authorities seized crime assets worth an average of €1.6 billion euros per year from 2010 to 2014, l'Espresso magazine reported.

Then this one:

19 MEMBERS OF THE CAMORRA ARRESTED AND $17 MILLION IN ASSETS SEIZED

Hard blow to the Camorra of Villaricca. A maxi operation conducted by the Carabinieri and Guardia di Finanza led to the arrest of 19 people affiliated with the Ferrara-Cacciapuoti clan.

The people who ended up in pre-trial detention, after the order issued by the investigating judge of Naples, are investigated for Mafia-type criminal association, extortion, violations of the legislation on weapons and drugs and attempted murder, crimes all aggravated by the purposes of facilitating the clan. During the operation by the Carabinieri and Guardia di Finanza, various companies were also seized for a turnover of approximately 16 million euros. The companies operated in the most disparate sectors: real estate, construction, hydrocarbons, cafeteria and catering, and sale of foodstuffs.

And this one:

29 MOBSTERS FROM THE CAMORRA ARRESTED; $143 MILLION IN ASSETS SEIZED
October 3, 2008

Italian police arrested 29 people in the Naples area Tuesday in a crackdown on the Camorra after the killings of an Italian businessman and 6 African immigrants earlier last month. They had arrested 3 suspects in the September 18th murders.

“The war against the Camorra will continue until it is done,” said Italian Interior Minister Roberto Maroni, whose government last week ordered 500 troops to the Naples region for 3 months to assist in the crackdown. Maroni said last week that the Camorra had declared war on the Italian state.

Casalesi Clan Suspected

The September 18th murders were allegedly committed by the Camorra’s feared Casalesi clan in the town of Castelvolturno. An Italian was killed at an arcade, and at an African-run boutique, 6 Africans from Ghana, Liberia, and Togo were shot dead. The BBC reported that the killings may have been the Camorra’s response to foreigners moving in on its lucrative drug trade. Police raided small coastal villas near Naples and rounded up the 3 suspects, and found 2 AK-47 assault rifles, pistols, police uniforms, and other disguises. Another suspect in the murders was arrested on September 22nd.

Prosecutors had issued more than 100 arrest warrants on Tuesday, about 70 of which were issued for people already convicted of crimes or awaiting trial in jail. Police then arrested several people suspected of holding high rank in the Casalesi clan, including Guiseppina Nappa, the wife of Francesco Schiavone, whom investigators suspect of running the group from jail. She is accused of taking monthly payments that the Camorra pays to the families of jailed members. Police also took control of buildings and seized assets valued at €100 million ($143 million).

This one:

$18 MILLION IN ASSETS SEIZED FROM CAMORRA-LINKED BUSINESSMAN IN ITALY & ROMANIA
August 31st, 2021

Italian police on Tuesday seized some 16 million euros in assets from a Salerno businessman allegedly linked to the Naples-based Camorra crime group.

Roberto Squecco has been convicted of crimes that favoured the Camorra's Marandino clan.

The assets were seized in Italy and Romania. It is the first time that an EU measure on mutual recognition of seizures has been applied, said anti-crime central director Francesco Messina. "We are now able to address the offshoring of Mafia assets," he said.

And this one:

OVER $50 MILLION IN ASSETS SEIZED FROM MOB-TIED BUSINESSMEN IN THE TRANSPORT AND WASTE SECTORS
February 23rd, 2023

Police seized assets worth 50 million euros from the businessmen of transport and waste sectors, Michele and Giovanni Fontana, close to the Casalesi clan, Zagaria faction, of the Camorra. Giovanni Fontana is also close to Camorra drug lord Raffaele Imperiale.

Then there's this one:

$340 MILLION IN ASSETS CONFISCATED FROM THE CAMORRA
January 24, 2014

On Wednesday, Italian police issued more than 90 arrest warrants in a nation-wide operation against the Camorra, a Mafia-style organization that originated in Naples. Authorities also seized $340 million of its assets. Police said the operation, dubbed “Operation Aracne” from the Greek word for “spider,” gave a mortal blow to one of the most prominent clans within the Camorra, the Contini clan.

In Rome, Operation Aracne led to the closing of more than 20 restaurants and pizzerias. Most were managed by the Righi family, who prosecutors believe control the Contini clan’s money laundering operations.

According to Direzione Investigativa, Camorra godfather Edoardo Contini created a financial empire over the past 20 years by successfully distributing cocaine in some of the most dangerous neighborhoods in Naples.

In the Naples region, police seized 49 Contini owned companies and 28 estates, and froze more than 500 bank accounts. Contini business in this region was managed by the Di Carluccio family, who were involved in the oil industry. Seizures were also made in Tuscany, where the Camorra allegedly had a network of clothing businesses.

In the Apulia region, the investigation is still ongoing, and focuses on the Gallipoli football club. Authorities believe the Righi family paid an opposing team a $68,000 bribe in 2008 so the Gallipoli club would be promoted to a higher football league division.

Operation Spider shows how organized crime has penetrated the Italian economy. It follows an October 2013 report from Coldiretti, a national food organization which claims that about 5,000 restaurants in Italy are controlled by organized crime.

The office of Franco Roberti, Italy's national prosecutor in the fight against organized crime, said that the legitimate businesses created by the Contini crime family in the food, clothes distribution, and gas station industries were essential for allowing the clan to successfully earn illegal profits and avoid scrutiny. Police say the Contini clan also spread their influence through extortion, loansharking, and cocaine and heroin trafficking overseas.