Dewald valve with radio case moulding made of dark brown phenolic

Dewald valve with radio case moulding made of dark brown phenolic, c.1935. Front inscribed "DEWALD".

Details

Category:
Plastics and Modern Materials
Object Number:
1974-179
Materials:
phenol formaldehyde and phenolic (Bakelite)
Measurements:
: 4.8031 x 8.0709 x 4.9213 in.; 122 x 205 x 125 mm
type:
valve