1913-1928 Litho issue, 5l. in pair, u/m. Var. "with no accent in ΓΡΑΜΜΑΤΟΣΗΜΟΝ" on the 1st stamp and "accent in ΓΡΑΜΜΑΤΟΣΗΜΟΝ and εισποακτέα" on 2nd stamp. THE ONLY KNOWN PAIR WITH THESE VARIETIES. (Hellas D87D+D87Ca).