Some type of scrip?

[bufaloeletric]

 

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[cw0909]

what size is it, can we get an img of the back
tried to enhance

 

[Tony in SC]

Looks like a lamp/lantern knob?

 

[bufaloeletric]

It’s not in my possession to measure. Was a little smaller than a dime. The back was too corroded to make anything out at all. Sorry for lack of information.

 

[bufaloeletric]

Makes sense

 

[Dug]

TonyinSC is correct, lantern knob. You will find it displays a pat date and maker's mark on it.

 

[cw0909]

if the info on the knob can be read, you might find a patent
https://patents.google.com/

didnt see a square hole knob
https://www.google.com/search?q&tbm...d=0CBwQuIIBahcKEwjwsbzY0LrxAhUAAAAAHQAAAAAQAw

 

[CRUSADER]

Looks like a lamp/lantern knob?

Yeap, the wick adjuster knob.