Alpina 273-401 (18.5'''), Winding stem, DCN: 1620*

• DCN no: 1620

• Thread: 1.50 mm.
  

• Fits cal: 273, 274, 277, 278 (18.5'''). Base caliber: Unitas: 31

• A: = 120
• B: = --
• C: = 180
• D: = 150
• F: = 514

Versions:

• 273: H: = 5.35 mm, Lép.
• 274: H: = 5.35 mm, Sav.
• 277: H: = 4.15 mm, Lép.
• 278: H: = 4.15 mm, Sav.