Stamps of United States, 4 base month
1 to 50 of 684
postage
1851, Apr 19 1851 issue unwmk imperf (15 stamps)
| - | 1c | bl | Franklin, v. Type Ia | |||
| - | 1c | bl | Franklin, v. Type Ib | |||
| - | 1c | bl | Franklin, v. type I | |||
| X | 1c | bl | Franklin, v. Type II (1c) | |||
| - | 1c | bl | Franklin, v. Type III | |||
| - | 1c | bl | Franklin, v. Type IIIa | 1,000 – 10,000 | 100 – 1,000 | |
| X | 1c | bl | Franklin, v. Type IV (1c) (1852) | |||
| - | 3c | redbrn | Washington | |||
| X | 3c | dlred | Washington (1853) | |||
| X | 5c | redbrn | Jefferson (1856) | 10,000 – 100,000 | 100 – 1,000 | |
| - | 10c | grn | Washington, v. Type II (10c) (1855) | |||
| X | 10c | grn | Washington, v. Type III (1855) | |||
| - | 10c | grn | Washington, v. Type IV (10c) (1855) | |||
| - | 10c | grn | Washington, v. Type I 10c (1855) | |||
| X | 12c | blk | Washington |
1882, Apr 10 soft porous paper p. 12
| X | 5c | yelbrn | James A. Garfield |
1904, Apr 30 Louisiana Purchase issue wmk. double line USPS (5 stamps)
| X | 1c | grn | Livingston | |||
| X | 2c | car | Thomas Jefferson | |||
| X | 3c | dpvio | Monroe | |||
| X | 5c | dkbl | William McKinley | |||
| X | 10c | redbrn | Louisiana Territory map |
1925, Apr 4 Lexington-Concord issue unwmk p. 11
| X | 1c | dpgrn | Washington at Cambridge | |||
| X | 2c | carrose | Birth of Liberty | |||
| X | 5c | dkbl | The Minute Man by French |
1930, Apr 8 Massachusetts Bay Colony 300th issue
| X | 2c | carrose | Massachusetts Bay Colony Seal |
1930, Apr 10 Carolina-Charleston issue
| X | 2c | carrose | Gov Joseph West & Chief Shadoo a Kiowa |
1932, Apr 22 Arbor Day issue p. 11x10.5
| X | 2c | carrose | boy & girl planting tree |
1933, Apr 19 Peace of 1783 150th issue p. 10.5x11
| X | 3c | vio | Washingtons Headquarters at Newburgh NY |
1935, Apr 26 Connecticut 300th issue p. 11x10.5
| X | 3c | vio | The Charter Oak |
1938, Apr 25 Presidential issue (21 stamps)
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