finds from woods and local park

[the bone]

Found all the clad at the park and let a couple local kiddies pinpoint for me and keep all the coins they found the funniest was when he pulled an old zip strip style pull tab from the ground and thought it was "an awesome find" said he was gonna make a necklace out of it! Meanwhile my 3 year old is looking at him like he's nuts cuz he's seen all of those things i pull out of the ground. my son eyeballed the chucky cheese token and the 12 gauge federal shell cap,lead slug, and the other thing were all found in the woods. thinking about posting it in the whats it section if no one on here can tell me what it is right away the thing is brass and has 7787 and a 1 stamped on the back side the dimensions are 2.75 in longx2wx1d its solid brass and has a half moon cutout like something round sat in it. thanks for looking and hh

 

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[generic username]

maybe a brass bushing or some soft material mold of sorts?

 

[the bone]

Thats about as good as i can figure too i was just hoping someone could get a little more specific as to what it might be off of.

 

[Roger Mn.]

It looks like a crank shaft bearing from inside the piston rod. You have half a bearing.