McVitie Weston valve collection, Cossor valve, type X.121 (Experimental)
- Made:
- 1933
- maker:
- A C Cossor Limited
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Cossor valve, type X.121 (Experimental), 5.5in diam screen, length 1ft 10 in overall, (RMW/K39 - McVitie Weston number), by A C Cossor Limited, 1933.
