T321) TASMANIA QV 4d Imperf Chalon Head (1855) Perkins Bacon Proof (SG.18var) A SUPERB PERKINS BACON PROOF IMPRESSION on thick paper without watermark. A lovely 4 clear margin example in blue.ee footnote in Stanley Gibbons Australia Catalogue (p29) after SG.18. Clean fresh and never hinged. Way better than the average seen of these.