I recently bought the Omega railmaster 60th limited edition. I am looking to buy an leather tanned strap. Can anyone provide some suggestions of quality leather straps aside from official omega straps
I would advise buying from https://www.atelier-romane.com/ They have straps in both regular and reduced lengths.
Nice pickup. I always thought the speedy trilogy strap went nicely with the RM and also the seamaster - in fact the one I didn’t like was the black that came with it. Expensive, but worth it.
Try Jean Rousseau. They make straps that come with some Omega watches. They're making me a custom strap now for my 19mm lug width, same as yours, but a FOIS. It will be about a month turnaround time.
As as above, try jean Rousseau. Omega will sell you one for £180 but they do pop up on eBay and some websites slightly cheaper.