Found this last night in my wife's Great Uncle's collection. The collection had been sitting in storage since he died in 1974. This looks a bit like DDO-005, but not seeing some of the same markers as on Variety Vista. Thoughts?
Machine Doubled. Ejection Doubling. Definitely not DDO-005 or any DDO for that matter. Keep looking, you'll find one eventually. See the linked page for diagnostics. http://www.varietyvista.com/1966PDDO005 half.htm