Heuer BUND 1550sgChrono Cal. 230 stem No 772 (male & female part)

hello
i'm not sure if this is the correct forum but i am giving it a go
i need the 2 part stem for my heuer bund

can anyone help?

 

eBay appears to have the female halfPurchases made through these links may earn this site a commission from the eBay Partner Network available.

 

typically its the male part i need...

 

https://www.cousinsuk.com/product/male-swiss-made

This may be suitable, they have different taps as well so it should work.

 

I've managed to sort one from Germany through the MWR forum

thanks all