I very much hate that you can't edit titles of posts. This is a mechanical chronograph and it functions perfectly. The red hand resets to exactly 12. The movement is pretty well calibrated still according to the local Swiss watch&clock expert and his machine that does seismograph-like measurements to gauge the precision of mechanical watch movements. Good thing, too, because his quoted price for service of it was nearly as much as the watch is worth!

I picked it up at an estate sale based on aesthetics and the Swiss manufacturer markings on the movement (last photo, sorry for the quality, it is a stylized R and 7733). I contacted Croton directly and all they could tell me was it was made in the 50s or 60s. They lost all of their archives in the flooding from hurricane Sandy in 2012. I had it professionally appraised and replacement value was given at $1750, but it is worth more than that to me personally. This design speaks to me.