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Return To ShopThe Gruen 335-21 watch movement is a manually wound mechanical movement that features a sub-second function. It was commonly used around the year 1945. Although there is limited information available, it is known that the 139 movement is part of a series of movements (125, 129, 131, 135-139, 143, 145, 147), but the specific differences between these movements are not fully understood.
The Gruen 335-21 features the following functions:
Dimensions | GR Reference # | End Type | Buy |
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1.60 x 0.080 x 250 x 7.5 mm | Manual | Buy mainspring | |
1.50 x 0.080 x 280 x 7.5 mm | GR4078 | Manual | Buy mainspring |
Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Part Description | Reference # | Alternate | Buy |
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