Ended up winning this small lot of Atra handles and I'm trying to correctly identify them. (All are marked "Gillette" and they all seem to have an Atra head) Please correct me where I am wrong/missing info below: Handle 1: (closest to the camera): Date code: X3 Vintage Contour handle - or Contour Plus? Does X3 in this case mean 1977 or 2000? Handle 2: (middle) Date code: D4 No idea what the handle is Does D3 here mean 1980 or 2000? Handle 3: (Furthest away) Date code: Y4 I think this is a wooden Elite handle. Does Y4 here mean 1978 or 2000? Better angle of the first razor - the Contour/Contour Plus?