40l/2l. grey-bistre 1900 Large Hermes Heads surcharges in pair (pos.29-30) perf. 11 1/2, imperforate between. Wide "0" and distance 3mm (pos.29) while narrow "0" and distance 3 1/2mm (pos.30). One suche a pair per sheet. Very rare. (Hellas 161+161c).