OP XXV
hours, minutes, seconds, chronograph
Monometallic Glucydur balance, 18,000 vph, Incabloc anti-shock.
| Label | Value |
|---|---|
| Model | OP XXV |
| Winding | Manual |
| Basis | Minerva 13-22 |
| Producer | Minerva |
| Introduction | 1923 |
| Dimension | 29,89 mm (13 1/4''') |
| Frequency | 18.000 vph (2,5 Hz) |
| Power Reserve | 55 h |
| Jewels | 22 |
| Height | 6,40 mm |
(Image source: Panerai.com)