Engine parts (1) - Bosch - ZF4 - 1920-1930

Pre-war ignition magnet and ignition distributor
Manufacturer: Bosch
Model ZF4
The magnet is obviously in its original condition and I think it is unrestored, possibly intended as a spare part and could have survived the last 80–90 years in this excellent condition.
The magnet is visually in pristine condition.
The magnet appears to be complete, the ignition interrupter is complete.
All covers are present and likewise apparently original and in prime condition.
Technically, I have not checked the magnet, it has been in my collection for more than 20 years and I have had no opportunity to test its function. Therefore I cannot confirm that the magnet would be ready for immediate installation.
Dimensions: height 13 cm, length about 20 cm, width about 8 cm
Weight about 10 kg