Hellberg Mars 657V 






Hellberg Mars 657V
Sn: 203XXV
Tubes: ECH21, EF22, EF22, EBL21, AZ1
Dial lamps: 2x 6,3V 0,3A
Dimensions: 505 x 363 x 245 (mm)
Year: 1946-47
ID: 0889