50l/40l grey-bistre 1900 Large Hermes Heads surcharges perf. 11 1/2 in mint vertical pair (pos.92/102). Both "0"s wide while space 2mm (pos.92) and 1 1/2mm (pos.102). Pos.102 u/m. One such a pair per sheet. Very rare. (Hellas 162Ab+162Aa).