Maybe he was just paying back a shylock loan? I don't think it's unusual at all for people from one family to do business with another. Especially not in NYC with five families.
Part of the agreement when Gambino got Colombo the boss spot was Gambino loaned him 1.2 million. He paid 6k a week on that for a dozen years.....
Half a point interest is a pretty good rate. Especially when you loan it out to other wiseguys at a point, point in a half or 2 points.
