Wurlitzer models during the years 1940 through 1942 used Chicago locks in their cabinets.  Floor models normally had a TF (Top Front) lock on top which opened using a TF-25 key.  The Lower Front lock used the LF-50 key.  The 41, 71 and 81 used a TF-25 lock.

They do vary in length however and I am not 100% certain which models use this 12/8 inch lock.

The included key is original, but some enterprising operator ground the detail off one side.