Fantastic! You're such a lucky man! Is that a 30min counter then? Does the minute jump? I'll have to investigate!! I used to dream about the Spatiograph, some sort of descendant of this one?
from 1953. Reference 765, powered by a Venus 178 an with the stop-function minute-counter at 3-o'clock being displayed in numerals instead of a hand. The production run on these very early "digital" versions was fairly small before Breitling replaced the ...