#U5321950 1c Green, stamped Envelope
$1.75 #U5343c dark violet 1950
$1.75- $3.20 #U5431960 4c Pony Express Centennial Issue Stamped Envelope, brown
$1.75 #U5772c red 1976
$1.75- $2.95 #U5361958 4c Red Violet, Stamped Envelope
$1.75- $2.50 #U5471 1/4c brown 1965
$1.75- $2.50 #U57313c brown & bright green 1976
$1.75- $2.95 #U57513c brown & carmine 1976
$1.75- $2.50 #U5421960 2 1/2c Dull Blue, Stamped Envelope
$1.75- $2.50 #UX1101986 14c Stamp Collecting
$0.70- $1.75 #U57213c brown & blue green 1976
$1.75- $2.95 #U5494c USS Mattics Constitution
$1.75- $2.50 #U5546c blue 1970
$1.00- $2.50 #U57413c brown & orange 1976
$2.50- $2.95 #U5782.1c green 1977
$1.50- $2.50 #U58813/2c Liberty Tree
$1.75- $2.95 #U56910c yellow, brt. blue & light green 1974
$2.00- $3.00 #U57110c brown & blue 1975
$1.75- $2.50 #U5571971 8c ultramarine
$1.75- $2.95 #U5481 4/10c brown 1968
$1.75- $2.50