Unidentified item

[toolong]

A friend found several of those items and wanted to know what they are.
Ihave attached some picturs of one.
Any assistance would be appreciated.

Thanks

 

[Fuzeman]

Could it be a vice or loading tool that is clamped to a bench?

 

[18pounder]

hmmm

erm, where were these found? it might give us something to go on.
Also,could you remove the rust so we can get a better look?
thanks
18pounder