Scott # 5668-5671 Mint Never Hinged Imperforated Gutter Plate Blocks Vertical

US Imperforated stamps.  Taken from ‘Presentation Sheets of 6-8 sheets per Presentation Sheet. These imperfs are from selected issues and not every issue are imperforates.   (Scott is now listing  these imperfs). The different combinations are Singles, Pairs, Gutter Pairs and Blocks, Plate Blocks, the rare Gutter Center Cross blocks and full Sheetlets.  The last time the US issued Imperforated stamps was then Farley National Parks issues.