It seems to That Advertising posters seemed to be under valued by correctors  And Auction houses except maybe Travel ones.

But in Advertising there doesn't seem to be much desire for them what In my opinion seems rather strange you can pick up good descent Victorian /Edwardian  posters for less for A hundred quid .

But would struggle to do the same  for Enamel signs and some shop displays. 

But in reality because of the nature of paper posters they were more likely to be thrown away torn or damaged but like I said can pick up decent ones for penny's. 

 what's your opinions on this and do you have any paper Advertising posters not talking about showcards