Does anyone happen to have any idea of where I might be able to source a clean used or NOS bezel insert for a Heuer/Monnin 844? Genuine parts for these 844's and early thick-cased 980's seem to be becoming increasingly difficult to find. While the bezel insert that's currently on the watch still in fair shape regardless, I think I'd be interested in finding a perfect replacement regardless, if possible...

Thanks in advance!