I recently bought a vintage Heuer chronograp with a porcelain dial, and want to know more about it - such as reference and if everything seems OK. I have tried to do my own research, but haven't found anything like this watch and the closest I have found is a mono pusher chronograph: https://www.hautetime.com/throwback-thursday-1930-heuer-single-button-chronograph/85187/ On the caseback is has an engraving of "33432" which doesn't return anything relevant when I Google it. I believe it has an early Valjoux 22 movement (?), and the crown seems to have been replaced. I paid about $950 for the watch in working condition, and have the possibility to return it. Anyone got more info?