Mail Auction #51 General Stamp Sale

20 lep. x3 blue (pos.17) with plate flaw "white spot on the Greek border", 20 lep. light greyish blue (oxid. corners) with plate flaws "white line at the upper inscription" and "spot on the chin" (pos.27) and 20 lep. blue on green with "missing top frame line" (pos.21), u. (Hellas 19b, 19d, 19e)