The Ronda Caliber 5101 was the entry movement of the caliber line 51. It has got a pin lever escapement, seventeen jewels (among them a number of deck jewels) and a rocking bar winding mechanism.
This movement was also available with a swiss pin lever movement as Ronda 5131.
|Number of jewels:||17|
Nickel anular balance|
|Balance bearing / direction hairspring:||Counterclockwise|
|Adjust mechanism:||Hairspring key|
|Winding mechanism:||yoke winding system|
|Setting lever spring:||2 hole(s)|
|Size:||6 3/4 x 8'''|