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?

 

I think a lot of it is Heuer but maybe not the whole watch. It kinda looks like the single pusher Heuer from the '30s but with an extra pusher added. The bottom pusher is not positioned in symmetry with the other pusher and crown. It also looks fluted. Puzzling.