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Marconi 1928-9 Valves

The Wireless Constructor, October, 1928.
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The valves in the advert described as new for 1929 are: P425, P625A, P625, HL610, H08, HL08, P08, S08, S215 & PT235.

Other valves in the advert are: DEL210, HL210, DEL410, DEL610, DEH210, DEH410, DEH610, LS5B, DE5B, DEP215, DEP240, DEP410, DEP610, LS5 LS5A, DE5, DE5A, S625, KL1 & KH1.

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