This is what I got emailed me back Steven Lloyd who is another appraiser that I found on the web. Still waiting to hear back from the other appraiser. Kind of interesting information.
Your bluebill drake decoy looks like it may have been made by the Herters decoy & sporting goods co. in Wisconson ... circa 1930-40s..
They made many different styles and species.
They also made plastic heads similar to yours so hunters could add them to damaged cork or wooden decoy bodies..
Value : under $125 .00
Steven Lloyd
Top Historic Waterfowl Decoy Researcher
The National Decoy Information Centre
1-613-922-7000