Cal 2541 Compressor. See Rössler, p.175. (This is the only Zenith I own that actually appears in that book; his estimate of "around 1955" is highly contestable.)
Fantastic piece... I get confused though, when did the certification lines come into play with rolex? I thought it was closer to 70,s
New strap lunch time purchase - love the simplicity of this watch face, especially on even numbered days when the roulette date is red!
Love it, I´ve got a big thing for those 60´s and 70´s colour rich watches and that one sure ticks all the boxes
Naaa, not really. I probably will send for service and hold until its value goes through the roof! ha!