UNITAS Cal. 525, 526, 530 (5.25''') Winding stem - NOS - Ronda: 270
Manufacturer RONDA, Switzerland no: 270
- Fits cal: 525, 526, 530 (5.25''')
- Thread: 0.90 mm (D)
- A: = 63
- E: = 238
- B: = --
- C: = 100
- D: = 90
- F: = 32
Manufacturer RONDA, Switzerland no: 270