This is the limited edition CH47 Chinook ALT1-Z. This watch was only made available to Royal Air Force Chinook crews and only 50 were produced. Of those 50, only 30 were stainless steel. I’m looking for offers around £3500 and I’m based in the UK. The dial features a Chinook helicopter in plan form with the bespoke 3-handed sub dials forming the dual rotors of the helicopter. The numeral '4' on the face has been augmented to read CH-47 and the skeletised rotor, which is visible through the glass case back, has 6 cut-outs in the shape of the Chinook's rotor blades. The case back in engraved with a military service number and the serial number (xx/50). The watch comes complete with the original leather watch wallet, strap changing tool, unworn Nato strap, black leather strap, and Bremont pin buckle. The Bremont ALT1-Z was designed with aviators and world travellers in mind. Z stands for ‘Zulu Time’ and allows the wearer to display local time together with the official world time standard: Universal Time Coordinated (UTC), Greenwich Mean Time (GMT), or even Zulu time (Z). UTC replaced GMT in 1972 as the international reference standard for communications, military, aviation, maritime and other activities that span multiple time zones. MOVEMENT Modified calibre 13 ¼''' BE-54AE automatic chronometer, 25 jewels, Glucydur balance, Anachron balance spring, Nivaflex 1 mainspring, 28,800bph, 42 hour power reserve. Bremont decorated skeletised rotor. FUNCTIONS Hour, minute, second, date at 3H, chronograph small counters with seconds 30 minutes and 12 hours, 24 hour GMT hand. CASE Hardened stainless steel Bremont Trip-Tick construction with scratch resistant DLC treated case barrel. Case diameter 43mm, lug width 22mm, case thickness 16mm. Patented inner bi-directional Roto-Click bezel. Operated by crown at 8H. CASE BACK Stainless steel with integrated flat crystal, 6 stainless steel screws with polished heads. DIAL Metal dial, coated nickel hands with Super-LumiNova luminous coating. CRYSTAL Domed anti-reflective, scratch resistant sapphire crystal. WATER RESISTANCE 10 ATM, 100 metres. RATING & CERTIFICATION COSC Certified.