What Prewar sets have never been completed/are uncompletable?

[Leon]

Originally Posted by sportscardpete

e104-3 set will never be completed IMO.

Has anyone completed a t208 set?

I think there are 1-2 complete T208 sets. Also, I am quite sure there are at least a few D310 sets out there. However, I think There are a ton of sets never completed (that I am aware of). Many of the rare, obscure uncategorized ones don't have complete ones known. Orange Borders, J=k, T231, E123, E221, E270, E286. Also, I have never heard of many of the 19th century sets being completed. Many 19th century sets....N172, N173, N338, N403 N690, N693, E223 etc.....are ones which I am not aware of any being completed. The list goes on.. Heck, depending on how you define it, a true pre-war type set would be very difficult to complete and I am fairly sure has never been done.