Up for sell from my collection is my Sinn 657 watch. Everything is original and I have boxes (2 of them including inner and outer boxes), papers, watch, leather strap Sinn original, bracelet with full links, instruments, booklet. I hope I didn't miss something but there are all of them through the pictures. I will include into the package along the SS bracelet and the leather strap a NATO strap Bond style like new. I worn it occasionally and there are regular signs of. Please take a closer look through the pictures as part of the description. The AR coating has irregular scratches but I didn't want to remove it because I wanted to keep everything in the original condition. I will post the specifications from the Sinn website (ref# 657) and I will try to update with info as need it. The price is 950 GBP through PayPal (fee included). -> 880 GBP The delivery is 12.50 GBP and I send only to EU. Regards! Technical specification from the sinn.de: Mechanical Movement ETA 2824-2 Self-winding mechanism 25 bearing jewels 28,800 semi-oscillations per hour Seconds stop function Shock resistant as per DIN 8308 Anti-magnetic as per DIN 8309 Case Case made of stainless steel, bead-blasted Sapphire crystal glass in front, anti-reflective on both sides Case back screw-fastened, nickel-free Crown screwable Meet the technical requirements for waterproofness, as set out in standard DIN 8310 Pressure-resistant up to 20 bar Low pressure resistant Functions Hours, minutes, seconds Date display Pilot’s bezel with minute ratcheting and luminous key mark SINN Technologies Captive bezel Magnetic Field Protection up to 80,000 A/m Dimensions and Weight Case diameter: 41 mm Band lug width: 20 mm Case thickness: 12 mm Weight without strap: 77 gramme Dial and Hands Glossy black dial Numbers and indices coated with luminescent colour Hour and minute hand coated with luminescent colour