What is this Worth PLEASE

Its your cash, maybe the guys carb was just jacked.
But to me it looks like somebody built a decent engine one time.
It got tired, and just thru a garage rebuild in it.
It actually may still run decent.

I bought a rebuilt 340 one time, the guy was sandblasting his car, there was sand dust in the engine when I tore it down, every port was taped over, but somehow it managed to get in there.
This engine was in a separate, but connected garage.
After a good cleaning it is still a good motor, but unless you build it, you will never know.