McVitie Weston valve collection, Mullard valve, type NT9X
- maker:
- Mullard Limited
This image is released under a CC BY-NC-SA 4.0
Licence
Mullard valve, type NT9X, marked 201K, pinch marked 423
Science Museum Group
© The Board of Trustees of the Science Musuem
Mullard valve, type NT9X, marked 201K, pinch marked 423, (RMW/J48A - McVitie Weston number), by Mullard Limited.
