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| Alpina 273A hunter (Unitas 32) Features stem wind and set sub second Data 18.5''', Dm= 41mm H= 5.3mm 15 jewels f = 18000 A/h power reserve 33h | Remarks hunter calibre with same designation also open-face calibre options, bimetallic screw balance, Breguet hairspring, Reed's regulator differences not known between hunter 273A, 274 family: 273, 273A, 6525: open face, H= 5.3mm 274, 273A: hunter, H= 5.3mm 277: open face, H= 4.15mm 278: hunter, H= 4.15mm Example, year: signature; shock device ca. 1925: A, 273A - 330315 |
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