Gruen Gold plated/SS back cover Half rotor automatic winding 1950s Japan
Type: Wristwatch

Maker
Gruen

type
mens

name
round
Material
40 micron gold plated/SS back cover

belt
Aftermarket leather belt/Aftermarket gold-plated buckle

Drive system
half rotor automatic winding

Model year
Probably the 1950s

Case diameter/arm circumference
Approximately 35mm

accessories
none

condition
*Used A+ as an antique
*There are some small scratches and age-appropriate changes but I think it has aged well.
The edges of the lugs are showing the ground due to the wear of the gold plating but I don't think it's noticeable to the naked eye as the color of the plating and the ground are similar.
I don't think it's noticeable even if you take a quick look at it with a magnifying glass.
*The operating feel of the crown is generally good considering the age.
*The appearance of the movement is in good condition considering its age.

comment
*Plastic windshield snapback
*CAL.462SS 17 jewels Incabloc earthquake resistant device Breguet hairspring Chirane screw balance 18 000 vibrations No second hand regulation
*The case design is quiet for Gruen but I think the dial design is very unique. I think it's a very interesting watch.
*Half rotor automatic winding has lower winding efficiency than normal automatic winding. Moreover since it is an old watch if you feel that the winding is insufficient please make up for it by winding it by hand from time to time. However since this is a self-winding watch we do not recommend winding it by hand as often as you would with a hand-wound watch as this will put a strain on the machine.


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Pre-Owned