For sale are the pictured stamps. I will do my best to solve the problem. The item "US Stamps Sc# 668 Plate Block Mint Never Hinged PF Cert.VF+ (B-029A)" is in sale since Friday, June 14, 2019. This item is in the category "Stamps\United States\Plate Blocks/Multiples". The seller is "hbstamps68" and is located in Lehigh Acres, Florida. This item can be shipped worldwide.