Help me id this glass liquor bottle with fingerprints

I found this bottle in an old miners camp.

--Federal law forbids sale or reuse of this bottle (1935-1964)

--Makers mark is a keystone symbol without anything in it

--Likely machine made

--Metal screw cap with two threads

--Fingergrips embossed on the side (right handed bottle)

--Bottom of the bottle looks like this:



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