Bidspirit auction | United States
United States - 1979, definitive issue, American Schools, 30c green on blue paper, block of four printed on double paper (probably because of end/begin of paper roll), full OG, NH, VF and rare, Sc. #1606 var
United States - 1979, definitive issue, American Schools, 30c green on blue paper, block of four printed on double paper (probably because of end/begin of paper roll), full OG, NH, VF and rare, Sc. #1606 var