It's tough to tell and I don't think we will ever know. We didn't have the "benefit" of a Valachi in Chicago in that time period to let us know for sure.

I've always been of the opinion that the crew bosses could make guys (with the top boss's approval) and whether or not they did it with the ceremony was up to them.

Huron, there were other CI's in the FBI files that claimed that a ceremony did not take place but they may have been too low to know for sure.