Stop in for a cup of coffee

How old is this engine? 273 ? I forget, is it loose ? Can you move it ?
Ever use a wire to pull old freeze plugs out of a freeze plug the rusted ot got broken? I would try my best to get it out, back in the 70's everyone messed with there engines, or could this be from birth of the engine.. hmmm, ..weird

1965

It moves... lemme see