 The Irish Free State ( Saorstát Éireann ) overprints debuted on 11 December 1922 . This is a three @-@ line overprint using a sans @-@ serif typeface and was done by Thom , Harrison and the Government Printers . The last overprinted stamps were the Waterlow & Sons re @-@ engraved King George V 2 / 6 , 5 / - and 10 / - values that appeared in 1934 and were overprinted in 1937 for use in Ireland . 
