Jewels for fine mechanics; watch jewels, balance jewels
精密机械的珠宝；手表珠宝 天平珠宝

1969-11-01

Jewels for fine mechanics; cap jewels for watches
精密机械的珠宝；表帽珠宝

1969-01-01

Jewels for fine mechanics; watch jewels, flat
精密机械的珠宝；手表珠宝 扁平

1987-11-01

Jewels for fine mechanics; jewels for instruments, ring jewels
精密机械的珠宝；仪器用珠宝 戒指珠宝

1969-10-01

Jewels for fine mechanics; V-jewels
精密机械的珠宝；V形宝石

1972-08-01

Jewels for fine mechanics; jewels for instruments, flat
精密机械的珠宝；扁平乐器用珠宝

1969-10-01

Jewels for fine mechanics; cap jewels for instruments, flat
精密机械的珠宝；仪器用平盖宝石

1969-10-01

Jewels for fine mechanics; jewels with concave shape for watthour-meters
精密机械的珠宝；瓦特乌尔电度表用凹形宝石

1972-10-01