McVitie Weston valve collection, Ostar-Ganz valve, type A520
- Made:
- 1932
- maker:
- Gustav Ganz and Company
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Ostar-Ganz valve, type A520, external covering of copper gauze, pinch marked A24, (RMW/F85 - McVitie Weston number), by Gustav Ganz & Co., 1932.
