This is a vintage Seiko Bellmatic 4006-6037 from the 70's, gold plated case measures 38mm excluding crown, 42mm from lug to lug, lug size 20mm, case shows very very tiny wear on edge, plastic crystal in very good condition, original crown, original brown dial marked SEIKO BELL-MATIC 17 JEWELS  with gold markers and hands, alarm pointer on its outer chapter ring set by crown, date/day window at 3, stainless steel screw back cover marked SEIKO with model no 4006-6037, automatic Seiko 17 Jewels 4006A movement, it runs good, the alarm is also functioning as it should, comes with new leather band. Buyer pays $15 insured S&H in U.S.