> It is clear with a roound hat-looking getter on one side of the bottom.
> Only marking at all is ^L^GC in white, and below it > in white, RADIOTRON
> written in an oblong in white.
> What've I got here?
** Think you meant to write " 6L6GC" - OK ?
Radiotron is a trade mark used by RCA - so that 6L6 was likely made in the
USA by RCA.
Or it might be a fake.
Depends where it came from.