Top Margin Plate Number Block of 10 with Printers Imprint, Type V. Mint - Original Gum - Never Hinged. The item "US# 323 Plate# Block of 10 M.Cat$700.00+" is in sale since Wednesday, September 9, 2020. This item is in the category "Stamps\United States\1901-40\ Unused". The seller is "ralphsroom" and is located in Melbourne Beach, Florida. This item can be shipped to United States.