The 6-digit 391XXX numbers are your EIA date codes.
391 means Altec mfr
4th digit is the last number of the year. 9 could be '59, '69, etc, so you have to know approximately when the model series was made.
5th & 6th digits are the week of the year.
The 6-digit 391XXX numbers are your EIA date codes.
391 means Altec mfr
4th digit is the last number of the year. 9 could be '59, '69, etc, so you have to know approximately when the model series was made.
5th & 6th digits are the week of the year.
"[I]We're going all the way, till the wheels fall off and burn[/I]!"
Bob Dylan, from [I]Brownsville Girl[/I]
[I]"Time wounds all heels"[/I]
John Lennon, referring to the Nixon/Hoover deportation fiasco.
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