1919, Dashnak Z Monograms, highly specialized assembly of over 60 stamps overprinted with "Z" without value (framed and unframed), mint and used with a few multiples, including the very scarce large framed Z in violet on 2k. (Mi. 4b) and an unlisted 15k. with framed Z type E4, plus some counter-surcharges; a very fine group of genuine Armenian monograms, most items with a Stefan Berger opinion
