Moving-armature headphones by S.G. Brown, c. 1925
Moving-armature headphones by S.G. Brown, c. 1925
Details
- Category:
- Radio Communication
- Object Number:
- 1983-51
- type:
- headphones
- credit:
- Grierson, A.R.
Moving-armature headphones by S.G. Brown, c. 1925
