 
| Alpina 278 (Unitas 34)
Features stem wind and set sub second
Data 18.5''', Dm= 41mm H= 4.15mm 15 jewels f = 18000 A/h power reserve 33h
| Remarks hunter calibre
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 (Alpina 273A, H=5.3mm)
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