Envelope, 1887, 30¢ red brown on amber. Registered entire to Transvaal, Africa, canceled by violet target with matching "Registered, Troy, Ohio, May 13, 1902" date stamp alongside, N.Y. etiquette and appropriate transit and receiving backstamps, Very Fine, a rare usage to Africa. Scott No. U337  Estimate $1,000 - 1,500. $0 (Image)