Flying Mercury stamps overprinted with K.Π and new values

1 Λ. 1917

Греция

black overprint

Charity Tax stamps

Ionian Islands Earthquake Fund - Phaneromeni Ruin, Zakynthos 6 руб	overprint on Mi 391 with new value 17 руб	Violet imprint "Postal Staff Welfare Fund" 30 руб	Restoration of Thessaloniki Monuments Fund - St. Demetrius 4 руб
Overprint on Mi Z63	Stamp overprint	Red imprint "Postal Staff Welfare Fund" 7 руб	Red overprint on 1939 issue for postal fund tuberculosis 26 руб
Postal Staff Welfare Fund	Postal Staff Welfare Fund 12 руб	Postal Staff Anti-Tuberculosis Fund 18 руб	Overprint on 1937 stamp for postal staff antituberculosis 17 руб