steam engine fireman weathervane

Bought this at a garage sale, it is a copper weathervane with the firemen with horses pulling it. Was wondering if these were worth anything. a set of wheels on the back need fixed, but didn't want to ruin it if it could have some value. I would have it fixed professionaly if that was the case. We have an old barn we are trying to fix up and was going to put it on there, but would like to know if it should be looked at first. I can't find anything online. Thanks for any info you may have.