For sale is an Omega Speedmaster Professional Sapphire Caseback. This is an authentic Omega caseback used for the second run of display back models (3573 & 311), and has the later text of "First and Only Watch Worn on the Moon." The caseback is in excellent used condition, with some smal marks and fine swirlies on the metal ring while the sapphire crystal insert is in perfect scratch free condition. The caseback and movement ring are in excellent shape, TZ rating 92% as you can see in the pics: I'm asking $500 Payment Details: Shipping via USPS Priority is included in my asking price. Bank Wire / other direct transfer methods accepted. Paypal good/services accepted with +3% fee, references and feedback. I'm willing to ship internationally but extra shipping and possible import fees might be applicable. If in the NYC/CT/Northern NJ area we could do a face to face. For references I have spotless Ebay feedback which I can refer to you, with identity verification, and also have done deals here, WuS and on TZ with positive feedback. If there are any questions please feel free to contact me via PM and I will answer as soon as possible. Reasonable offers are welcome.