GRUEN PRECISION
DAY-NITE, Circa
1960s
Goldplated Case with Stainless Steel Back. White
Refinished
Dial. 17 Jewel
Manual Wind. Cal. 510ca RSS. Yellow Luminous Hands.
Cutouts to Show Black Markers from 6:00 AM to 6:00 PM; Green
Luminous
Markers from 6:00 PM to 6:00 AM.
Original Unsigned Crown.
Plastic Crystal. 33mm
Case.