McVitie Weston valve collection, Ostar-Ganz valve, type A.C. MS70 D.C.
- maker:
- Gustav Ganz and Company
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Ostar-Ganz valve, type A.C. MS70 D.C., marked 433, made in Austria, with external screen of open mesh Cu-wire gauze, (RMW/F89 - McVitie Weston number), by Gustav Ganz & Co., 1933.
