252. Abacus Auktion 28. - 30. Juni 2023 Los 1313 Papua 1930 Aeroplane Overprints Harrison Printings 1/- sepia & olive with the Overprint Inverted SG 117a, unusually well centred, a few characteristic irregular perfs at left, lightly mounted with guarantee handstamps of Sanabria - who split the sheet - Gibbons New York and Kessler. Superb! Chris Ceremuga Certificate (2018) states "very rare as only one sheet of 40 printed". We sold examples from the collections of Tim Rybak, Peter Troy, Raymond Biggs and Paul Zatulove for $14,375 $16,100 $17,250 and $14,560 respectively Ausruf 10.500,00 AUD