Postal Card, 1891, 1¢ blue on grayish white, one blue miss-cut impression and with inverted impressions in black, some light staining, F.-V.F. and scarce. Scott No. UX11 var.  Estimate $200 - 300. This bicolor variety was formerly listed as a trial color proof, but is now generally believe to be printer's waste. $0 (Image)