1c Green, Rotary Perf 11 (544).
Two horizontal pairs, tied by "San Francisco Calif. Mar. 18, 1924 10:30 PM" machine cancel on oversize cover with attorney's return address to Commissioner of patents in Washington D.C., second stamp with depression in paper from cancel at bottom left, third stamp tiny scrape at bottom right, fourth stamp with top right corner missing
A REMARKABLE FRANKING WITH TWO PAIRS OF THE RARE ONE-CENT ROTARY PERF 11 ISSUE, SCOTT 544. VERY FEW COVERS OR CARDS ARE KNOWN, AND THIS IS THE LARGEST MULTIPLE USE.
Ex Martin. With 2005 P.F. certificate. Scott Retail as off-cover singles $15,000.00
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