A quick google search shows what appears to be a vintage gun grease, made 30-60 years ago perhaps. I'd stick it in the garage to use on hinges and such and buy a more modern, made in this century grease for use on the guns.
TW25b is a good gun grease. So is tetra, Slide Guide, and Shooters Choice gun grease.
I like the reusable syringe that the Shooters choice comes in. You can refill it many times with Mobil 1 wheel bearing grease, which is practically the same thing.