THANK YOU FOR LOOKING!
FROM MY GRANDFATHER'S ESTATE
He was a carpenter for the St. Louis Cardinals and the Saint Louis Opera House for 40 years.
 
Rescued This Weathervane From Top Of His Barn
15"
The Bolt is Loose to Adjust for Roof Angle
The Last Pics Are Before I Cleaned It (Just Oil)-It was Oxidized
Hammered Metal
I'm not sure what kind of metal it is. 
It is rusted at the point on the top that holds the animal but the rest is painted black and I can't tell. 
It is nonferous that's all I know.
Grandma says it went up in the 1930's??
 
If you have any questions feel free to ask 
I am not really familiar with tools at all.