Columbus, O., Correct, Sep 26 1884, L.D. Myers, P.M., perfect strike of fancy cds on registered cover bearing 2¢ red brown (210) and 10¢ brown (209), tied by two strikes of resurrected prison bar grid fancy cancel, Philadelphia Sep. 28th arrival backstamp; reduced slightly at right, Very Fine. Estimate  $300 - 400. This is the only recorded example of this Columbus "Correct" cds. This is also the only known example of the resurrected "Prison Bar" grid used to cancel stamps on first class mail. The grid is usually used to cancel unsealed circulars with 1¢ stamps. Illustrated in James Doolin's article "Resurrection of the Columbus, Ohio Seven Bar Grid in a Square" in The Chronicle 210 May 2006 p. 146. $0 (Image)