Found Kel Lite 7c works!

[Nightstick]

I found a working 7 cell C at Goodwill for a few bucks. It didn't have a bulb so I got a led replacement and it's darn good C. Notter engraved it multiple places and that is also cool. Barstow California made goodness

 

[Nightstick]

Couple more

 

[RWT1405]

Very nice!

Congratulations!

 

[ABTOMAT]

Nice find. It's early-ish for a C-cell model, say mid '70s. They stopped putting model numbers on them after a while. If it has no serial number it's on the early side of that period as well. Is the bulb holder a big black plastic cone?

 

[Nightstick]

Nice find. It's early-ish for a C-cell model, say mid '70s. The stopped putting model numbers on them after a while. If it has no serial number it's on the early side of that period as well. Is the bulb holder a big black plastic cone?

It has a black plastic bulb holder and the serial number is C0057712

 

[ABTOMAT]

It has a black plastic bulb holder and the serial number is C0057712

That's cool, I have C0057095 in 7C.