This is a set of four full stamp sheets with the same print number on each different corner (ROUND THE BLOCK # 29312) meaning that they were printed on the same sheet before cut.  They are from the United States, featuring SPACE WALKING ASTRONAUT PAIRED STAMPS in full multi-color. These sheets were issued in 1967. The stamps are in mint never hinged (MNH) condition, have been stored in a mint sheet file since issue in a safe deposit box and have a grade of VF (Very Fine) or better. The certification for these items are uncertified and it has not been modified. The sheet is listed under the categories of sheets, United States, and stamps, and is identified as SCOTT'S #1331-32.