There is evidently some conflict over what the aircraft is and who made it. According to the website I found it on it is called the OV Flyvebad FBIII, manufactured by the Naval Dock Yard of Copenhagen, as opposed to the Maagen I and II which were purchased Donnet-Leveque aircraft.
Noyade has posted the image of the challenge aircraft.
I'm going to close this challenge and declare Open House.