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NOS American and European Tubes For Your Dynaco
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RCA-branded Mullard 5AR4/GZ34 - NOS - The left tube is date-coded by RCA as "CH" - Indicating it was added to stock in Jan. 69 The right tube is date-coded by RCA as "BM" - Indicating it was added to stock in Apr. 67 Note that the left tube has seven serrations while the right tube has four.
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RCA-branded Mullard 5AR4/GZ34 - NOS - The left tube is date-coded by RCA as "CH" - Indicating it was added to stock in Jan. 69 The right tube is date-coded by RCA as "BM" - Indicating it was added to stock in Apr. 67 Note that the left tube has seven serrations while the right tube has four.
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