Leonetti said Scarfo used to take him down to florida back in the 1970's. Most likely the early to mid 1970's if it's really true. And thats when they met up with Lansky according to Leonetti.
From
http://themafiaprince.com/2012/11/05/forward/"Now one of the most important Mafia informants in history, Leonetti never said much during those meetings down in Miami. He was just happy to be there. He looked at Lansky the way others would look at DiMaggio, Caruso or Hemingway. One of a kind. A man who defined the world in which he operated.
Lansky was there at the beginning, when it all started, when Cosa Nostra was formed. Leonetti, who rode to power with his uncle and who for a time controlled the mob’s rackets in Philadelphia and Atlantic City, is a man who helped bring it all to an end.
“This was back in the 1970s,” Leonetti said several years ago as he recounted those trips to Florida. “Any time we went, my uncle would call and we’d go over and see Meyer. He’d be sitting there in the restaurant. Him, Nig Rosen. Mickey Weissberg. They used to get together there every day. It was, like, Meyer’s hangout. They’d go there and play cards. Meyer liked us. He liked my uncle. So we’d sit around and he’d tell stories about the old days, about Benny and Charlie and how it used to be.”
Benny was Benjamin “Bugsy” Siegel. Charlie was Charles “Lucky” Luciano. Siegel, of course, brought the mob to Las Vegas. He built the
Flamingo Hotel Casino in 1947 and that turned the desert into a money machine for the mob. Then he forgot who his partners were. And so he was killed.
Years later, Lansky still talked about it.
“Meyer told us about how upset he was when Benny got killed,” Leonetti said. “He really loved Benny. But he said Benny was robbing them guys and he wouldn’t lilsten. He said Benny never liked to listen to the Italians. And that he thought the casino was his, which it wasn’t. It was theirs. Benny would only listen to Meyer and Meyer said he kept him under control the best he could, but when they decided to whack him, there was nothing he could do. It broke his heart when they killed him, but he couldn’t stop it. It was business.
“Then he looked at my uncle and he said, ‘Benny was a stone killer, Nick. But you know, there’s a lot of killers [in the Mafia].’ My uncle just nodded.”"
