Help Identifing preamp tubes?

[Adamclayton]

I'm pretty sure the GT is a EI ECC83. The RCA could be a Mullard, Amerex or I don't know. Had for awhile and never found out 100% sure what they are. 2nd pic is the RCA labeled and third is the Groove Tubes.

 

[Blue Strat]

GT = EI

The other one looks like a Matsushita, Japanese Mullard reproduction.

 

[Adamclayton]

Thanks Mike! I was thinkin maybe that RCA was Japaness. The GT says 7025 on it.
Either of these tubes good for V1 or v2 of a Marshall type amp? Had some old EI that were not real musical before. Haven't tried them out yet.

 

[Blue Strat]

Thanks Mike! I was thinkin maybe that RCA was Japaness. The GT says 7025 on it.
Either of these tubes good for V1 or v2 of a Marshall type amp? Had some old EI that were not real musical before. Haven't tried them out yet.

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