Here are some better pics Brian. (I hope) Headstamp could be cleaned a bit without damage but I just left it the way it was. Color does not look quite the same on the purple case as the pics.
Dave, on your case, I am glad you asked. I have been wanting to share this info with someone interested. I had not thought about it in several years. I have seen these empty cases and been told they are punt gun cartridges by some pretty knowledgeable people. I have not see a catalog listing them or a gun to shoot them. Nobody had any references that I could find.
BUT
In the 1920s Federal Labs bought Webley shoulder stocked flare launchers and converted them to tear gas guns for US Law Enforcement. (ref, pic from Federal training manual showing early guns)
Federal Labs experimented with gunpowder to burn the CN that they wanted to use in shells for this gun. They found out that the best gunpowder to burn the CN was "EC blank fire powder" made by the Explosives Company of England (Eley/Nobel). The only ones making EC blank powder in the US was the US military. Federal could not buy from them so they bought powder under contract from ECE in London. (ref TG Munitions, Thomas Swearengen, 1966)
I have never seen a cartridge like this loaded with shot, flare, tear gas or smoke.
If this were loaded with shot I am not sure the cartridge case could withstand the pressure it would take to launch shot at a velocity adequate for duck hunting.
My speculation is that ECE (Eley/Nobel) made these empty cases, based on flare cases, as samples hoping to sell them to Federal Labs. That is why they are all new unloaded and unfired. Things like this are often passed around and kept on desks.
For you Brits, did the UK manufacture tear gas munitions during the 20s and 30s? If so who made the cases?
Comments and references are welcomed especially on the genealogy of Eley/Nobel/ECE at that time. Maybe update wiki if you can.


