Stamps & Covers Public Auction 370

1922-30 Bicolour 3rd wmk 1d red & green, perf 14, error INVERTED wmk. F-VF fresh MNH, pristine never hinged original gum. ACSC D106a cat $10,000+, SG D92w cat £6000+, both for M, should be at least double, MNH, so $20,000+ or £12,000+. Major rarity - only 4 examples recorded. - one of these was offered in auction 320 where it sold for $12,000+ comm. Certificate can be obtained on request. (P)
Estimate A$7000