116-T1x, 2016 U.S. Christmas Seals Test Designs Sheet, R17-CSCS-4-06, reverse of sheet

2016 U.S. Christmas Seals

116-T1x, 2016 U.S. Christmas Seals Test Designs Sheet, R17-CSCS-4-06
2016 U.S. Christmas Seals
2016 U.S. Christmas Seals