Sale 804 — The Robert Zoellner Collection of United States
Sale Date — Thursday-Saturday, 8-10 October, 1998
Category — 1922-29 Issue
EXTREMELY FINE AND CHOICE. THE DISCOVERY BLOCK OF THIS RARE VARIETY, WHICH PROVED HOW THE VARIETY WAS PRODUCED. AN OUTSTANDING SHOWPIECE.
Prior to the discovery of this block, it was assumed that Perf 10-on-side varieties were somehow caused during the Bureau's change from perf 10 to perf 11. The discovery of this block in 1934 and the later discovery of other values of the 1922 issue with perf 10 on one side demonstrated that the variety was produced much later, all on the same perforating machine.
Ex Lilly, Grunin and Schilling. Listed but unpriced in Scott