date code help

Tubes Asylum

Questions about tubes and gear that glows. FAQ

i just won an auction on ebay today. the tubes are amperex 7119's and the date code reads: 1D4/45D1. seller said they come with halo getters and gray plates. i find reading date codes daunting...can someone here ascertain the year of production? thx in advance

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Topic - date code help - jmkochevar 17:32:13 03/22/16 (1)

RE: date code help - Tre' 17:50:37 03/22/16 (0)

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