McVitie Weston valve collection, Six-Sixty valve, type S.S.10
- maker:
- Six Sixty Limited
Six-Sixty valve, type S.S.10, glass envelope loose, mottled green and black moulded , (RMW/E31 - McVitie Weston number), by Six Sixty Limited.
Six-Sixty valve, type S.S.10, glass envelope loose, mottled green and black moulded , (RMW/E31 - McVitie Weston number), by Six Sixty Limited.