McVitie Weston valve collection, Siemens-Halske valve, type B0
Siemens-Halske valve, type B0, marked 26773, (RMW/E1 - McVitie Weston number), by Siemens & Halske Norsk.
Siemens-Halske valve, type B0, marked 26773, (RMW/E1 - McVitie Weston number), by Siemens & Halske Norsk.