50¢ Trans-Miss., rich color, tied by Chicago, Ill. oval handstamps on 1899, 4¢ brown oversized entire to Charlottenburg, Germany, purple "Registered, Feb 15, 1900, Station O, Chicago, Ill." straight line date stamp and N.Y. registry label, reverse with New York transit and receiving postmarks; entire slightly reduced at right, Very Fine, a rare registered usage of the 50¢ Trans-Mississippi Issue to a foreign destination. Scott No. 291+U374  Estimate $750 - 1,000. $0 (Image)