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Return To ShopThe Gruen 270SS is a mechanical watch movement with manual wind and sweep second functionality. It is part of a series of movements that include the ETA 1301-1304 and 1312, although the differences between these movements are not known. The Gruen 270SS movement was commonly used around the period of approximately 1950.
The Gruen 270SS features the following functions:
Ronda Reference # | Shock System | Buy |
---|---|---|
3391 | Ordinary/None | Buy staff |
3815 | Incabloc | Buy staff |
4043 | Rubyshock | Buy staff |
3266 | Supershock | Buy staff |
Dimensions | GR Reference # | End Type | Buy |
---|---|---|---|
1.35 x 0.090 x 250 x 8.0 mm | Manual | Buy mainspring | |
1.35 x 0.090 x 240 x 7.5 mm | GR3496 | Manual | Buy mainspring |
1.30 x 0.090 x 240 x 7.5 mm | GR3218 | Manual | Buy mainspring |
Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) | |
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