Nice example of the c64, perforated on 3 sides and straight across making this stamp from the top edge of the sheet.
1962 8¢ Airliner and Capitol Dome
Issue Date: December 5, 1962
City: Washington, DC
Printed By: Bureau of Engraving and Printing
Printing Method: Rotary press printing
Perforations: 10 ½ X11
This stamp was issued to conform to the new postal rates, which became effective on January 7, 1963.
The dome of the Capitol building pictured on this stamp is the second dome. As the country grew, the Congress did as well, and outgrew their building. When it was expanded, a new, larger dome replaced the first.