Philips GM3153
This early oscilloscope is not yet restored but in working condition after more than 80 years !

This scope was produced by Deutsche Philips-Gesellschaft around 1938 and was produced in
three sizes.

GM3153 the smallest with 7cm screen (DG7-1)
GM3152 medium size with 9cm screen (DG9-3)
GM3154 largest type with 16cm screen (DG 16-2)