Lot
340 
Post Office Dept., 1874, 3¢ black (die PD5, watermark 5, size 10, knife 54), unsealed entire with printed "M.O.B. Canadian…Postmaster of the U.S. International Exchange Post Office at Detroit, Mich." return imprint at left, addressed to Kansas City, Mo. and canceled by "Detroit, Mich., Oct 18" duplex postmark, Very Fine and choice; with 2024 P.F. certificate. UPSS No. PD42.Scott No. UO8 Estimate $3,000 - 4,000.
THE UNIQUE USED EXAMPLE OF THE 1875 3¢ BLACK ON WHITE POST OFFICE DEPARTMENT OFFICIAL ENTIRE.
The UPSS catalog only lists this entire in unused condition with no more than five examples in existence. These mint examples mainly appear to have a Registered Business imprint in the upper left corner. Other examples of this die all appear to have been printed on amber paper with a variety of watermarks and pre-printed formats from at least eight locations. This example, which is similar to an amber entire (watermark 4) illustrated in the UPSS with the same imprint, is on white paper and has the corresponding watermark 5.