Vintage antique cast iron chain drop pulley barn farm factory tool

Description

Vintage antique cast iron chain drop pulley barn farm factory tool.  The first pictures shows complete assembly. This is a really heavy unit, it was removed from a chain hoist assembly.   I had to dis-assemble it to get it into a large priority shipping box. It could use a cleaning.   It was removed from a chain block and tackle that had a double chain pulley on the other end.  I needed the chain, this part was left over.
I had to pull the key on one end of the pulley shaft, and broke it off.  If you intend to use it, it will need a new cotter pin or something similar to keep the pin in.  It is a well made pulley and hook, I didn't brush it off much, so I am not sure if there is a manufacturers name on it.  I suspect there is.
Please pictures for measurements.   The outside dim. on the pulley is approx. 6-7/8.  It is approx. 14-7/8" when assembled.   The hook is marked forged steel.
Please ask questions prior to bidding, I will try to answer, but I am a pretty old guy and tired of monkeying with things I need help with lifting.  :)  Pictures aren't great, should not have used white background, but not doing it again.
thanks for looking,
PLEASE SEE PICTURES FOR DESCRIPTION
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Please email any questions PRIOR TO BIDDING.