1900 Large hermes heads surcharges, 30l/40l. (wide 0) in block of 4 (pos.121-122/131-132), bottom pair u/m. Var. "space 1 1/2mm" on upper pair (pos.121 and 122) and "space 2mm" (pos.132). UNIQUE block in the sheet of 150. (Hellas 155Aa+155A+155Ab - 320+ euro).