3c Violet, Ty. I, II, Booklet Panes of Six (501b, 502b). Three of each, all scarce to rare positions incl. Positions K, L, and N for No. 501b, first two Mint N.H., last lightly hinged, No. 502b with Positions K, L (Mint N.H.) and O, Fine-Very Fine, Positions N and O are extremely rare and sought after by specialists, comprising 0.4% and 0.3% of the printings according to U.S. Booklets and Booklets Panes, Scott Retail $545.00 for most common position

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