CSA 11, 10¢ blue (4 margins, stain) tied bold blue dateless RICHMOND VA. CDS (type 6f) on small commercially made cover to Mr. Able Huffines Gibsonville PO Guilford Co. NC. Normally Richmond postal markings are black, but the type 6f is known to have been used with the scarcer blue ink on two occasions: May 16-29, 1863, and June 1-3, 1863. Slightly reduced at right, Ex Harry Muldrow. $90.