Ring's Vegetable Ambrosia, 4¢ Black, Imperf, Silk Paper, clear to large margins, rich deep color, Very Fine, an extremely rare sound example of the Ring's Vegetable Ambrosia 4¢ Black Imperforate on Silk Paper, with 10 examples recorded in the Aldrich census (of which 3 are reported to be faulty). Scott No. RS200b  $5,500. $0 (Image)