Vintage "Bigger Size" Mint Plate Blocks - U.S. Postage Stamps

Vintage Bigger Size Mint Plate Blocks - U.S Postage Stamps are in a good condition from what I see. It may have a bit flaw, but is stored for decades. All of these have never been used. **Almost all of these are set of 2. **I believe all of these are collected from the late 1950 to the late 1970s. Note: I'm not an expert in stamps. Kindly refer to the photographs for further information, and please feel free to make me a reasonable offer that's fair to the both of us. ideal for everyday use. finest materials and excellent craftsmanship ensure long-lasting durability.