You’ll find various Sonor hardware produced from the early 1920’s till the 1990’s.
Not all hardware can be dated exactly. The dates were determined by searching through all available catalogs.
There are gaps in the available catalogs etc., but the hardware will fit the published timeframe quite well.
Over the years Sonor made roughly 3 typenumbers.
- From early 1900 – WW2, numbers starting with 640, 641 etc.
- From 1950 – end of 1952, 400 numbers.
- From 1953 – end of the 1980’s, numbers starting with Z followed by 5000 numbers, like Z5330