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| Remarks: This was nominally a ladies calibre, however it was also used in the Men's Competence ancestor linked below.
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| Production period: 1944 to 1958 |
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| Jewels: | 17 | | Beat: | 18000 | | Winding: | manual | | Manufacturer: | MST |
| | Hand sizes: | | Hour: | 130 | | Minute: | 80 | | Second: | 19 | | | | | Stem tap size: | 90 |
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| Variant: | | | MST 373 | 8.75''' (19.40mmmm) Direct centre second |
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| Common parts/Interchange |
| Multiple balance staffs possible: | | MST part number: | 7432 (plain), | interchanges with MST: | nil | | MST part number: | 7471 (inca), | interchanges with MST: | nil |
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| Mainspring: | | MST part number: | 1227.1 | interchanges with MST: | nil | | Strength: | 0.0825 | | Height: | 150 | | Length: | 240 |
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| Watches in my collection with the MST373: |
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