Eterna 1419 partlist
Eterna
1021_Citizen 5500, 5501, 5502, 5503, 5510, 5511, 5530A
Inconnu
JLC 910, 911 technical
Jaeger-Lecoultre
645_as2060,1,2,6,4,6
Friction, Lubrication and the Lubricants in Horology
W. T. Lewis