Forks can be swapped around, as I have several bikes with aftermarket forks on them. As the forks on that bike are a type of springer, it's very possible that the forks were switched sometime during the life of the bike. The top of the line version of Double Eagle did have a springer fork (of a different design), but not all did.
However, the real clues lie in the frame itself, the loop-style chainstay / seat stay arrangement was not used by very many makers. Huffman is the other maker that comes to mind on that. The chainring (or front sprocket) is definitely Colson as well.