Help identifying tube

[marshall2020]

I found another old tube I can’t identify.
It has a square getter tilted at 45
Black ladder plates. I measure plates 16mm
Orange/red paint barely left
12 is stamped in the open space between 2 pins on the bottom
I appreciate any help

 

[70 Mach 1]

Look like original RCA fender tubes from the 60s.
That looks exactly what originally came out of my untouched 69 vibrolux

Lemme fine one and post it

 

[napalmdeath]

I have a mystery tube that came in a used amp I bought a few years ago. I'll have to dig it out, but I suspect it's an RCA as well.

 

[70 Mach 1]

As luck would have it i hid mine for safe keeping and cant find it

But this is the same thing

 

[CDawg]

As luck would have it i hid mine for safe keeping and cant find it

But this is the same thing

View attachment 458897

That's a different tube; Sylvania Long Grey Plate Circle Getter 12AX7. Different getter, mica, plate structure and copper rods vs nickel for RCA. Says RCA but it's relabeled.