Seen one of these disks here before...

[Squirrel322]

I've seen one of these posted here before but couldn't find it. I believe someone guessed a shotgun shell part but it seems to thick to me. I can't remember if it was ever properly identified.

 

[ecmo]

I want to say oil lamp wick adjusting wheel but those are usually thinner than that.

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[Deftone]

I've found similar ones and always assumed they were from old valve stems. MODEL T A FORD METAL TIRE VALVE STEM CAPS 1928 1927 TROG STREET Rat Rod Hot | eBay

 

[Charlie P. (NY)]

Not a shotshell part for certain.

 

[AlienLifeForm]

Hem weight?

 

[Squirrel322]

Hem weight?

Seems kind of heavy for a hem weight but what do I know?

A tire valve stem cap is interesting but I don't know enough about them...

 

[trdking]

if its cast iron, I would say it is a wheel off of an old tootsie toy or other cast iron toy.

 

[mk4125]

. It looks too perfect & round to be a lead whizzer (native American toy). What part of the country did you find it?

 

[Squirrel322]

Found it in central Michigan.

 

[trdking]

I found these. I can't find the wheel with the circles but I have seen it before