3646 3646 Prototyp

3 examples, Italy, bottom of the case exchanged by a glass bottom

Label Value
Reference3646
CollectionVintage
SE/LE/BENo
Model3646 Prototyp
Production yearab 1956
Movement240 SF
Case MaterialSteel
Dial ColorBlack
Waterproof
Crystalplexi
Case size
Height
Lug width