They would skin the ducks and mount them over cork bodies, cure them, And rubberize the bodies. They would then add rigging to the bottom add a stabilizing panel for when their flooring, and add glass eyes. This group of decoys consist of six Drake Mallards, and six Hen mallards. Completely in their original hard to fine case. At the time, the case was also waterproof.Everything here is 100% original, and I also have the original advertisement flyer that came with the decoys. The item "Ex Rare Decoy Deluxe Whistler Brothers 12 Pack Mallard WithOrig Case + Paperwork" is in sale since Friday, April 26, 2019. This item is in the category "Sporting Goods\Hunting\Vintage Hunting\Duck Decoys". The seller is "polypingle" and is located in Amery, Wisconsin. This item can be shipped to United States.