McVitie Weston valve collection, Z Electric Lamp Co. valve, type R
- maker:
- Z Electric Lamp Company
Z Electric Lamp Co. valve, type R, marked 2989, (RMW/B59 - McVitie Weston number), by Z Electric Lamp Co..
Z Electric Lamp Co. valve, type R, marked 2989, (RMW/B59 - McVitie Weston number), by Z Electric Lamp Co..