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RE: Mystery 12AU7 = RFT

65.116.131.6

In Reply to: RE: Mystery 12AU7 = RFT posted by Michael Samra on June 30, 2009 at 21:00:11

I would read those dats as 1967 ('77?), week 51 and '69 (or '79) week 51. HP labeled those codes, so manufacture date will be a little earlier - any etched codes?

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