The watch looks like a totally overpolished ref. 136.011 with a refinished dial. I think it has been equipped with a non matching caseback. The crown is most likely a replacement.
I hope you're not intending to buy this watch?
Edit: I just found this one on ebay with a similar dial / hand configuration that looks much more correct:
https://www.ebay.com/c/26020319971Purchases made through these links may earn this site a commission from the eBay Partner Network
Click to expand...