A toe tap maybe?

[can_slaw]

This one has mystified me since June. Cannot find a photo of another one. Hopefully someone here has found or seen one

 

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[DeepseekerADS]

Maybe, but I don't see any tack holes.

 

[can_slaw]

That's what held me up also, no way to attach. Found on a site rich with history. Was a civil war hospital and a Fort during the war of 1812.

 

[bradyboy]

need to see the other side in order to help -

 

[bradyboy]

need to see the other side in order to help -
sort of looks like lead IMO

 

[can_slaw]

need to see the other side in order to help -
sort of looks like lead IMO

That's a great idea. Here is the other side, with a nickle placed beside it for size reference.

 

[can_slaw]

Also, if I had to guess a material, I would say aluminum or a light pot metal. It's very light when compared to a similar sized item of steel or lead.