![](https://coimages.sciencemuseumgroup.org.uk/50/675/large_thumbnail_1972_0141_0248__0002_.jpg)
McVitie Weston valve collection, Sylvania valve, type 6E5
- Made:
- 1940
![Sylvania valve, type 6E5, (RMW/Y623 - McVitie Weston number)](https://coimages.sciencemuseumgroup.org.uk/449/133/medium_smg00257522.jpg)
Sylvania valve, type 6E5, (RMW/Y623 - McVitie Weston number), by Sylvania Electric Products Incorporated.-1940
Sylvania valve, type 6E5, (RMW/Y623 - McVitie Weston number), by Sylvania Electric Products Incorporated.-1940