Mullard Tubes - Date help?

[nevermind]

Need some help dating an old Mullard ECC83

 

The tube reads:

 

I61

B3A2

 

as good as I can tell anyway

[ΨWindingΨ]

 

Need some help dating an old Mullard ECC83 The tube reads: I61 B3A2 as good as I can tell anyway

 

 

Blackburn factory. Probably 1963 2nd week of January. (could be 1953 too)

[nevermind]

 

Blackburn factory. Probably 1963 2nd week of January. (could be 1953 too)

 

 

thanks

 

definitely not 53 so I'll go with 63

 

that was how i remembered the date code works, but it has been a few years and i couldn't find a site for reference

[ΨWindingΨ]

 

thanks definitely not 53 so I'll go with 63 that was how i remembered the date code works, but it has been a few years and i couldn't find a site for reference

 

 

hehe

 

B is for the factory, 3 for 1963. A for month and 2 for week. I've used it before myself. Here's a link.

 

http://ozvalveamps.elands.com/valvecodes.htm

 

Didn't look it up but the top three tell you the decade it looks like. Anyways I have a few 12AX7 Mullards stashed too. Great tubes.

[nevermind]

I used to have an Epiphone class A amp that ran on a single 12ax and a single 5881, so I have a bunch of classic tubes that I would swap around. Swapping tube styles and makes in that thing made a HUGE difference. Might have to build something similar one of these days, I kinda miss it from time to time.