Kienzle 57/19

1956-1963 (whole family) pin-lever escapement with ruby pins (Fig.6) detached manual wind ratchet on dial side, crown mechanism with rocker bar Base movement and automatic module (Fig.7) are pillar designs, where almost all lubrication spots are freely accessible. Thus both can be maintained only partially disassembled. Modifications, especially varying rotor shapes, can't help with dating, due to the short manufacturing periode and missing records.