@obrentharris You are a superhero! Seriously, I can't thank you enough. I do believe you are correct, and my Geminiani frame is in fact the one you're referring to. I got a message from the seller and he confirmed that when he bought it, it did come with MAFAC brake calipers. Your memory of the Top-63 model knocks the ball out of the park for me! I found a comment on velobase.com that The "Top 63 was launched on the 1962 Salon du Cycle (Le Cycle Nov./Dec. 1962)" My frame has a city registration sticker on it from 1963, ergo I think this gets me pretty close to being able to say with a great deal of certainty that the bike was manufactured, imported, and sold in 1963 (assuming the Top 63 was not put on later, which seems unlikely. Although the 1962 & 64 Gitane catalogs show the higher end models coming with MAFAC Tiger and Racer models, other reports tell me that there was a great deal of variance between what the Gitane catalogs said and what showed up in the 'showroom'). Again, I can't thank you enough!!