I've just got myself a Speedmaster Professional 3590.50.00 (case ref 145.022) to add to the collection. I ordered myself a new (original Omega) bezel before it arrived because the photos didn't do it justice.
I thought the bezel was badly scratched, but turns out that what looked like big scratches in the photos are actually tiny (not noticeable to anyone but me apparently) in real life.
I've already got the new bezel so I may as well put that onto my watch, which means I'll have a spare one once the original is removed; I'd be happy to sell it to you if it's the one you're looking for (can send better pics if it's the one you're after):