Louis Erard 1931 Réserve de marche
| Brand | Louis Erard |
| Name | 1931 Réserve de marche |
| Reference | 53 209 AN 02 |
| Diameter | 42 mm |
| Material | PVD Case, Rubber Strap |
| Features | No date, Power Reserve Indicator, Small Seconds, Water resistant to 100 ft |
| Movement | Manual Mechanical |
| Price | About $2,701 France - about €1,950 |
