Excellent condition-- crystal is perfect, and I cannot see any flaws in the case. Complete with all bracelet links, sizing tool, inner and outer boxes, manual and warranty card (showing original purchase date in 2014). $1,545 shipped to US address. Open to reasonable offers and trades (up, down, or even).

Some information on the 856 UTC from Sinn:
• Case diameter (mm): 40.0
• Case thickness (mm): 11.0
• Case lug width (mm): 20
• Weight - head only (grams): 70
• Water resistance: 200 meters
• Case back: Solid
• Case finish: Matte
• Case metal: Tegimented hardened steel
• Dial color: Black
• Front crystal: Sapphire
• Tegimented: Fully
• Inert gas: Filled
• Copper sulphate: Capsule
• Antimagnetic: 80,000 A/m
• Movement: Automatic mechanical