Mullard 7025?

[nyazzip]

i got a hold of a Webcor tape machine in the spring and i just got around to gutting it. inside, the tubes were all labeled Webcor, and one is a 7025. it says "made in great britain"; and i suspect it might be a Mullard. anyway, i popped it into a simple guitar amp, and for the first time, i seem to be able to really hear a difference, when compared to all the other 12ax7 i have used. it really seems to sound awesome, and i can't explain it much more objectively or empirically. it is the first 7025 i have ever had, so maybe that's the reason.... and i didn't go in to the "experiment" with high expectations or a bias, because i didn't research the tube until after i was impressed by it.
am i turning into a golden eared cork sniffer?? i sure hope not !

[Geek]

If it's GB, it'll be a Brimar or Mullard.

Is there codes near the bottom? You can decipher them here:
http://www.audiotubes.com/mullcode.htm

Cheers!

[nyazzip]

ah brent jesse, he's in my neighborhood! i have spoken with him on the phone before
i didn't have much luck with the codes. maybe some day i'll take a better crack at it
if anyone is interested, there is white silkscreen reading:
107
1022(the last digit is marred; it could be either a 2, a 3, or an 8)

then some dark grey letters that say "BOG"
cheers

[mesherm]

A 7025 is a low noise "premium" 12AX7 type tube usually with a spiral wound filament. Probably why they used it in a tape machine. My bet would be a Mullard. Nice score!
The B0G (be-zero-gee) proly means Blackburn (B) 1960 (0) 7th month (G).
The other numbers are likey tube type IDs #s.