Flying Mercury stamps overprinted with K.Π and new values

1 Λ. 1917

Greece

black overprint

Charity Tax stamps

Ionian Islands Earthquake Fund - Phaneromeni Ruin, Zakynthos 0.08$	overprint on Mi 391 with new value 0.21$	Violet imprint "Postal Staff Welfare Fund" 0.38$	Restoration of Thessaloniki Monuments Fund - St. Demetrius 0.05$
Overprint on Mi Z63	Stamp overprint	Red imprint "Postal Staff Welfare Fund" 0.09$	Red overprint on 1939 issue for postal fund tuberculosis 0.32$
Postal Staff Welfare Fund	Postal Staff Welfare Fund 0.15$	Postal Staff Anti-Tuberculosis Fund 0.23$	Overprint on 1937 stamp for postal staff antituberculosis 0.21$