Beemiester Posted February 18 Posted February 18 (edited) Hey all, I've this Phillips Miniwatt ECC32... It's etched: 1185 MLA How do I read the code. Also with Mullard CV181 BJ CV181 KB/A How do I read that code... I have gone to mullard magic and Jesse Brent but feel I'm more lost than before. Thanks in advance... Edited February 18 by Beemiester Typo
xlr8or Posted February 18 Posted February 18 It's almost impossible to decipher the MLA date code. Rest assured the 1185 tube code confirms a genuine Mullard Blackburn manufactured ECC32 tube. The BJ code represents September 1946 production. 5
xlr8or Posted February 20 Posted February 20 I'm not 100% sure but I think I may have finally cracked the MLA code studying many date codes over 20 years on ECC32, ECC34 and ECC35 tubes. M stands for Mullard. A stands for the Blackburn factory. L stands for year and month of manufacture as per below. I know the ECC32 tube was first introduced in 1948 so this coding nomenclature makes sense. So L would represent September 1948 production. What is certain is that you have a version 1 tube. 1
audiofeline Posted February 21 Posted February 21 I think this link will take you to the image that doesn't seem to work above. And it's got a lot of other tube ID info... 1
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