VERY FINE. A RARE SOUND EXAMPLE OF THE 1923 ONE-CENT ROTARY PERF 11 ISSUE.
Like the 2c, Scott 595, this issue was perforated in both directions on the flat plate perforating machine. This machine was not designed to perforate rotary press stamps, which are slightly different in size due to the curvature of the printing plate. This caused notoriously poor perforations. The existence of Scott 594 was not reported until four months after the final sheets were delivered, and the 1c Rotary Perf 11 was soon recognized as one of the rarest United States stamps.
Our exhaustive census of Scott 594, available at our website at: https:/siegelauctions.com/census/us/scott/594 , contains 89 used singles, four used pairs and five covers (including one with a pair) for a total of 103 used stamps. Many have perforations either in on one or more sides, or have faults.
Census No. 594-CAN-85. Ex Drucker and Curtis and signed by George B. Sloane. With 1934 A.P.S. and 2002 P.F. certificates. Scott Catalogue notes "both unused and used are valued with perforations just touching frameline on one side"