Foreign coin

[harris1]

Found in my back yard a little larger than a nickel but much heavier marked( Hong Kong ten dollars)

 

[jeff of pa]

WOW 10 Bucks

I think ya gotta take a trip to Hong Kong now & have a few drinks
on who ever lost it

seriously though Cool find

 

[Mackaydon]

The HK $10 coin was minted in 1993-1997 (except 1996). The coin was bimetallic (copper-nickel ring with a nickel-brass plug). Yours appears to be of one metallic composition and would be a repo if not bimetallic.
Don.......