FINE. A RARE PAIR OF THE 1895 6-CENT WATERMARKED BUREAU ISSUE WITH THE "R" OF THE WATERMARK STRADDLING BOTH STAMPS. THIS IS THE ONLY USED MULTIPLE KNOWN TO US.
The "USIR" (United States Internal Revenue) watermark error occurred when a supply of paper reserved for revenue stamp production was used for printing the 6c and 8c postage stamps. Unlike its more common 8c counterpart, the 6c is an extremely rare stamp. Our updated census of this issue records only 29 used copies. This is the only used multiple known to us.
Listed but unpriced in Scott as a pair. Scott Retail as singles