This copper weathervane represents an original form, ( one of a kind effort),  not a production weathervane, and still having its Original gold surface, silver horns and udder. 
the exaggerated horns and overall form will make you smile. 
weathervane was purchased from the Carter family, 68 South St. E. Kingston,NH. And was found in there barn. 
note: the more light on the Cow, the golder it becomes as showing in the photos. This is caused by the oxidation of the surface over the years.