FS: Seiko 5M23-6A60 "Grey Ghost" Scuba 200M Diver (April of 94') $195 | The Watch Site
Seiko Kinetic 5M23-6B70 72hrs - Rare and Runs & Stops For Repair Restoration See | WatchCharts
Seiko 5M23 Movement Details –– Mizeni
RCSB PDB - 5M23: Modulation of MLL1 Methyltransferase Activity
Navitar NMV-5M23, 5 mm, 2/3 in. format (Ø 11 mm image circle), C-Mount Visible to NIR Lens, f/# 2.8, M.O.D. 100 mm, filter thread M40.5 x 0.5 with Manual Focus, Manual Iris and Locking Screws
Seiko AGS Landmaster SBBW005 5M23-6A20 Rare Original Edition Circa 199 – Temple of Time