LOL, it is a giant ruptured duck and I never made the connection before you said that. To explain what this is for non-US members, in the US, veterans have flags placed on their graves and these are the holders. This makes my fifth. I have the Civil War, the Spanish American War, WWI, WWII and one that is not marked but is the same design as the WWI so probably another variety of that. These will have a metal rod that goes into the ground and stays year-round on the grave. The small flags with wooden poles fit in the top and are changed periodically.
The UK probably had their own manufacturers of the toy helmets. A book I picked up yesterday has a photo of two boys in the occupied Channel Islands wearing them. They look just like miniature Brodies and are painted green. It is possible Marx made them as they were a big toy manufacturer, but you had plenty of toy manufactureres also.