✅ SOLVED Is this a coin?

[DesertRidge]

I just found this on my property. I thought it could be a Chinese or Japanese coin, however there are no markings, at least that I can see. Thanks for your help!

 

[DesertRidge]

Here's the flip side -

 

[Crispin]

kinda looks like a washer for a carriage bolt...

 

[Mackaydon]

Initially, the sqauare hole appears too small for an Oriental coin.
Don....

 

[DesertRidge]

Hmm, yes, you're right, it does. The square just seems bit small for a bolt to go through, though.

 

[DesertRidge]

Thanks for your reply, Don. Okay, so probably not a coin.

 

[Broken knee]

It's a wick adjusting wheel from an oil lamp. HH
BK

 

[sutphin]

THATS A JAPANESE COIN ,, HOLE IS SMALLER .

 

[DesertRidge]

Thank you for all of your replies! I have actually found out what it is! It is part of a World War II Army collar insignia pin.