Vintage Mallard Duck Decoy

This duck decoy measures 13.5 inches in length. It is in original paint. It shows signs of age and use but is basically in good used original condition. It has a wood shrinkage separation between the head and body and some buck shot holes, but it is the original head. It has an unattached lead weight. Not sure of maker if you know let me know. Right off the farm in north Iowa.