McVitie Weston valve collection
- Made:
- 1937
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LicenseMazda RF pentode valve, type AC/SP.1
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Mazda RF pentode valve, type AC/SP.1., B7+tc base, marked 'DUMMY', one pin clipped, (RMW/Y168- McVitie Weston number), made by British Thomson-Houston Company Limited, 1937.
