You know the drill regardless of what brand you get in too deep and wide with. With the vintage Panerais, you start with say a 6152/1. The classic vintage Panerai with that big crown guard sitting there all proud. Then you see the sleek 6154 with the pretty crease running along the sides. Then you see the 3646, which has its very own beauty from the elegant angles that come together at every corner. Then you find a 6152, which is a blending of the 6152/1 and the 6154. Then you find a one off where it looks like someone at Panerai decided to modify the 6154 to an even thinner mid case with the lugs butted off. They did not even bother really naming it. Then you see a 3646 based mid case where the wire lugs are not there, but instead they have welded four fixed lugs on. Then you find another case that looks like the lugs are curved like a horn. Creatively, they call it a hornlug. LOL. Then you can go off into chasing the Mare Nostrum and the Mille Metri. If you want to keep sliding, you start adding more than one of each of these given there are multiple versions of each of them from types of movements inside to dial types even looks of how the dials have aged, not to mention the sewn on straps on the 3646 with closed wire lugs means you need multiple case just to have the right combination of types of leathers. People around you start wondering what is going on with you.