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| MST | 351, | 352, | 352sc, | 364, | 364sc, | 400, | 401 | | Ligne | 10.5''' | 10.5''' | 10.5''' | 11.5''' | 11.5''' | 10.5''' | 11.5''' |
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 |  |  | | Cal. 352 | Cal. 400 (late 60s) |
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| Remarks: Same base movement shared between 351, 352, 364, 400 and 401. A very long lived calibre design, with many variations, including being the basis for the 416 Calendar movement (listed separately). Differences in bridge shapes and design, fine finishing, seconds, and ligne the only significant differences. Models optionally fitted with a large variety of shock protection, including parachoc, shock-resist (SR), super-shock-resist (SSR) and finally (40x only) incabloc (SSR II). |
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| Production period: late 1930s to late 1940s (for 300 cals), and late 1940s to late 1960s (for 400 cals) |
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| Jewels: | 15 or 17 | | Beat: | 18000 | | Winding: | manual | | Manufacturer: | MST |
| | Hand sizes: | | Hour: | 150 | | Minute: | 80 | | Second: | 19 | | | | | Stem tap size: | 90 |
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| Variant: | | | MST 351 | 10.5''' (23.40mm) sub-second, seperate escape cock | | MST 352 | 10.5''' (23.40mm) sub-second, 3 finger bridge | | MST 352sc | 10.5''' (23.40mm) indirect centre second, 3 finger bridge | | MST 364 | 11.5''' (25.50mm) sub-second, 3 finger bridge | | MST 364sc | 11.5''' (25.50mm) indirect centre second, 3 finger bridge | | MST 400 | 10.5''' (23.40mm) sub-second, single train bridge | | MST 401 | 11.5''' (25.50mm) sub-second, single train bridge |
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| Common parts/Interchange |
| Multiple balance staffs possible: | | MST part number: | 7440, | interchanges with MST: | 351, 352, 364, 400, 401 | | MST part number: | 7441 (SR + SSR), | interchanges with MST: | 352, 364 | | MST part number: | 7475 (inca), | interchanges with MST: | 352, 364, 400, 401, 416 | | MST part number: | 7518 (inca II), | interchanges with MST: | 400, 401 |
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| Mainspring: | | MST part number: | 1213 | interchanges with MST: | 351, 352, 360,364, 371, 372, 400, 401, 416 | | Strength: | 0.1025 | | Height: | 155 | | Length: | 300 |
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| Watches in my collection with the MST352: |
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| Watches in my collection with the MST364: |
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