Here's a couple of pictures of a ref 4560 made in 1952. The case is yellow gold with a snap back and measures 35 1/2mm in diameter not including the crown. They call the lugs "corne de forms fantaisie". The dial is silver with hard enamel lettering and lines, In particular I really like the size of the sub-dial on this watch, its large and easier to read for my old eyes. The movement is Caliber 12" 1/2-495 17 jewel manual wind and it winds and sets like butter.