Ecuadoran Airmail Stamp - U.S. Constitution Sesquicentennial

This is a vintage postage stamp from Ecuador, specifically an airmail stamp ('SERVICIO AÉREO'), commemorating the Sesquicentennial (150th anniversary) of the adoption and promulgation of the United States Constitution (1787-1937). The stamp has a dominant green border and background with a central design featuring a large eagle, likely a bald eagle symbolizing the United States, holding an American flag on the left and a flag of Ecuador (yellow, blue, and red horizontal bands) on the right. In the upper left corner, there is an oval portrait of George Washington, the first President of the United States. In the upper right corner, an oval emblem, potentially the coat of arms or a significant seal of Ecuador, is visible. The top ribbon reads 'CORREOS DEL ECUADOR' (Posts of Ecuador). Below the eagle, the denomination '2 DOS CENTAVOS' is clearly printed. Small text at the very bottom edge indicates 'AMERICAN BANK NOTE COMPANY' as the manufacturer. The stamp appears to be uncancelled and in a relatively good, unused state, still attached to what seems like a sheet or block of stamps, as evidenced by the perforations along the left and bottom edges, suggesting it is part of a larger philatelic item or collection. The color saturation is good, and details are sharp, indicating quality printing. The historical context and two-nation celebration make it a notable collectible. The perforations are consistent, showing no major tears or damage, and the corners appear crisp.