Hi OF, I have a vintage IWC cal 8531 automatic dress watch with date, in mint condition, for sale. Ref 603A, Circa 1962. Details: - 35mm in diameter not incl crown. Wears pretty large for its size. I have a 6.8 inch wrist. - 19 mm lug width, includes a non-iwc generic black strap - movement is running well and watch is keeping time well - it looks like it's likely been polished at some point, however the watch case, dial, hands and movement (photo to come) all appear to be in excellent and original factory condition, to the best of my knowledge - while the movement and time changing is functioning perfectly, these watches can be a little difficult to wind with tiny crowns. Since it's automatic, I'd suggest just giving it a gentle shake instead - note this is a non-quickset date movement Asking $1500 USD to me, incl express shipping within Australia, anywhere else please DM or email me for a quote. Email: [email protected]. You can catch me on instagram also if you like, @guaranteed.rohu Some references from watch sales on Omegaforums: https://omegaforums.net/threads/guaranteed-rohu-is-a-top-notch-seller.90293/ https://omegaforums.net/threads/guaranteed-rohu-is-a-great-selller.91646/ https://omegaforums.net/threads/good-purchase-from-guaranteed-rohu.116102/ https://omegaforums.net/threads/guaranteed-rohu-is-a-great-seller.121748/ https://omegaforums.net/threads/new-arrival-and-a-shout-out.109660/ Photos (movement and caseback photo incoming):