SEIKO Prospex GMT 8F56-00F0 SBCJ025 Titanium Perpetual Calendar Sapphire | eBay,8f56 Seiko | eBay,This is the Perpetual Calendar GMT Ref. SBQJ017 powered by the 8F56 movement, a fully diashield coated titanium model from the early 2000's. The discontinued 8F56 movement has become a venerable movement,SEIKO Prospex GMT 8F56-00F0 SBCJ025 Titanium Perpetual Calendar Sapphire | eBay,Rare Seiko SBJQ003 8F56-002A Large Salmon Dial GMT Perpetual HAQ; Full Bracelet | WatchCharts Marketplace