How tall is the lawn jockey?
Is it electric, gas, or candle lit?
im not sure i dont think the lantern is original but there are no wires or anything
there are no holes or anything for wires either
I do not believe that your lawn jockey is the original Jacko one, it does not have many features of the original ornament including correct position, lantern, etc. I would call yours a likeliness to the original Jacko probably made around circa 1960.
As far as value, in current condition, I would place a fair market value of $250-$400 on your lawn jockey ornament. I do not feel a complete restoration would significantly effect the value.