El Primero Vintage watches are quite rare and highly desirable. This Defy is in very good overall condition and works well. The watch comes from a local collector. I chance to buy this piece for my personal collection but it is now time to let go and finance some other pieces. The watch has heavy marks on case and crystal. Crown is a screw-down and non-original.
 
Make: Zenith
Model: Defy
Reference: A783
Year: 1970's
Material: Stainless Steel
Dimensions: 38mm
Crystal: Mineral Crystal
Movement: Automatic
Bracelet/Strap: Aftermarket
Lug Width: --mm
Box/Papers: No/No