Up for grabs is a rare 1997 Omega Speedmaster Professional 3572.50 with tritium dial and hands and with the Cal 1863 movement sapphire display back. There is a slim serial range that has this combination. Not only the rarity and cool factor, this piece comes in near mint condition with perfect patina on the tritium dial and hands and with the full set including box, papers, hang tag and extra bracelet links. There is only slight mark on the left side of the case that is barely noticeable and I couldn't even get a picture of it. There is minimal superficial surface wear here and there, but only visible in certain angles, very close up and in certain lighting conditions. This is a hidden gem in the Speedmaster family that won't go unnoticed for long. Accessories included: Outer cardboard and inner red box. Inner red box has some light flaking as they typically do, but this one is still in great shape. Papers, manuals, and even the hang tag with matching serial. Feel free to ping me with any questions! Asking price is $4,500 OBO wired or PayPal F&F. Two-day air fully insured CONUS shipping is included. My forum feedback can be found here: - https://omegaforums.net/threads/a-deal-with-sog00d.85908/ - https://omegaforums.net/threads/sog00d-great-buyer.86589/ - https://omegaforums.net/threads/i-wanted-to-thank-sogood-for-a-not-good-transaction.83887/ - https://forums.watchuseek.com/f63/#/topics/4847525 - I have sold a Heuer Autavia Jo Siffert LE on WUS that is awaiting feedback from the buyer - Omega Speedmaster Speedy Tuesday 2 Ultraman. I've also included my eBay profile as I have a bunch of feedback there: https://www.ebay.com/usr/sog00d Thank you for looking!