1920-1930s, Forgery reference collection of over 1000 items, well written up and categorised, one man’s lifetime work from buying numerous collections, featuring items he thought were forged ovpts or of a clandestine nature he would then research and categorise in this reference collection, incl. a study of forged postmarks, surcharges, framed monograms including large multiples, etc., a valuable study for the specialist (Est. € 1’200/1’800) (Image)