El Primero 1971

Another El Primero tipycaly seventies.
A strange stell case,for a 38mm X 44mm size, with 27mm lugs bracelet.
Caliber is the 3019PC El Primero running at 36000 a/h

Note the Espada registers shape, the Defy indexes and hours hands.
The crown is a screwed one; the bezel and back are screwed too, a Defy system like.

Caliber El Primero 3019

Another Zenith El Primero (1969)... Automatic caliber 3019PC, the first automatic caliber running at 36000 a/h,date, Steel original band + signed buckle and crown. It has been worn, as you can see, but will be restored soon. The first case model..