ZENITH DEFY
 
Good vintage unpolished condition, with light use marks and lines.
Original bracelet in good condition, not stretched, original clasp double signed Zenith and GF Gay Freres (length on photos)
Beautiful "fumé" original dial in amazing condition. Original hands with lightly darkened tritium.
Original crystal and crown. Case back engraved with reference and serial number clearly readable.
Automatic Movement with no service history but working fine with good timekeeping and amplitude around 250º. 
The watch has new gaskets and has been tested for 3 atm waterproofs.