AS Cal. 1051 (5.25''') Winding stem - NOS - Ronda: 139
Manufacturer RONDA, Switzerland no: 469
- Fits cal: 1051, 1108, 1138, 1186 (5.25''')
- Thread: 0.90 mm (D)
- A: = 54
- E: = 266
- B: = 70
- C: = 135
- D: = 90
- F: = 38
Manufacturer RONDA, Switzerland no: 469