3c Washington with Columbus, GA man with a hat on cover

Date

1861

Forever Forget-Me-Not Help Find Missing Children pane of 20

Date

May 18, 2015

6c Washington small die proof

Date

1903

39c Yosemite Falls single

Date

May 27, 2006

37c George Balanchine and Dancers single

Date

May 4, 2004

7.1c Tractor single

Date

February 6, 1987

37c Cumulonimbus with Tornado single

Date

October 4, 2004

64c Dolphin single

Date

June 12, 2009

Two Ounce Vintage Tulip reissue pane of 20

Date

June 1, 2015

3c Win the War FDR signed photo model

Date

1942

1c Pan-American Fast Lake Navigation Panama-Pacific small die proof

Date

1915

8c Loading Mail single

Date

April 30, 1973

1c Franklin trial color card proof

Date

1881

10c Shield and Eagle G Grill single

Date

1869

Forever Four Flags: Liberty single

Date

2012

30c Franklin single

18c Frederic Remington single

Date

October 9, 1981

39c Lawrence & Elmer Sperry single

Date

February 13, 1985

3c Boulder Dam single

Date

September 30, 1935

44c Bill Mauldin single

Date

March 31, 2010

13c Utah single

Date

February 23, 1976

4c Electric Automobile invert single

Date

1901

2c Washington single line watermark right arrow block of four

Date

1910

29c Jack-in-the-Box single

Date

October 12, 1993