Help me identify this label on tubes

Many companies ordered tubes from tube makers with their name printed on them, hard to know who actually made the tube.

https://audiokarma.org/forums/index.php?threads/did-fisher-make-their-own-tubes.617033/

Sometimes a code can get you to the actual tube manufacturer

https://www.vivatubes.com/identifying-vintage-nos-vacuum-tubes-by-brand-country-and-eia-code/

Thanks!  It would appear it has a 188 code, so it is a GE tube. 

Sencore, use to be a pretty good source for test equipment. A lot of the older test equipment had valves.. Medical to space travel. Does it have an "Old" look and feel? Does it have the "Buck Rodgers" look? Loved that rocket! Tubes all over the place inside the ship.. Vacuum tubes in the vacuum of space... Will that work?

https://frank.pocnet.net/sheets/127/6/6CG7.pdf

Anyways.. Old / New? 6GC7. 6 volt, Glass, lost me after that.. C7? no Idea.. Tube historians can chime in.. That's all I got.. :-)

Regards