hello, im a newbie here, just a question for any omega geeks, i have a speedmaster professional, 20mm lugs, and have a chance of a nice 19mm leather strap, with 16mm buckle, genuine omega, does 1mm really matter, or would this look silly and really odd, advice please, thank you.
I think you'd get away with 1mm on a Speedmaster, I've used a 19mm on a submariner and it worked alright.
I'm sure I've seen a photo of a similar setup on the Rolex Forums. Can't recall the model, but it didn't appear like it was the wrong size. Welcome to OF Alan