
The Zentra 117 watch movement is a manual-wind type movement that was in use around 1955. The specific differences between the Revue 88, Zentra 117, and MSR B1 are not known.
The Zentra 117 features the following functions:
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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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