Seiko Gmt Perpetual Calendar 8f56-0029 - Pre-Owned Mens Watches
Seiko - GMT Perpetual Calendar - No Reserve 8F56-0020 - Men - Catawiki
8F56-0050] 1998 Perpetual Calendar -- bezel not rotating, battery needs replacement, needs overhaul in general -- but hey it's an interesting piece (and still works)! : r/Seiko