Stamps, Air Post, Curtiss Jenny, Scott C3, Plate block of 12, MNH. Mint never hinged, two plate numbers, arrow, two "TOP". Please see picture of back of block. Stamps, Air Post, Curtiss Jenny, Scott C3, Plate block of 12, MNH (L1554)" is in sale since Friday, February 1, 2019.This item is in the category "Stamps\United States\Plate Blocks/Multiples". The seller is "stampsandetcetera" and is located in Oak Harbor, Washington. This item can be shipped to United States.