Small block 340 engine for sale and some questions...

September 73 would be too late for a 340 I would think. Most likely 9/71 which would make it a 72 engine. As far as value, would need to know what heads are on it, cast or forged crank. Bore size would be nice.
Personally I wouldnt buy an assembled engine unless it was a steal of a price. I would rather be able to measure everything to make sure its not wore out junk.