1969 US 6c John Wesley Powell 1869 Expedition #1374 Used Cancelled Vintage

This listing is for a used, cancelled copy of the 1969 6-cent "John Wesley Powell" postage stamp. Issued on August 1, 1969, this commemorative stamp honors the centennial of Powell's historic geographic expedition down the Green and Colorado Rivers.

Item Details:
Scott Number: #1374.
Issue Date: August 1, 1969.
Condition: Used / Cancelled (visible cancellation marks as shown).
Design: The image depicts the perilous journey of Powell's expedition, showing men in a boat navigating the rapids of the Colorado River within the Grand Canyon.

This vintage stamp is a significant piece for collectors of American exploration, geology, or 1960s US commemoratives.

Please review the high-resolution photos to inspect the specific "wave" cancellation mark and the stamp's overall physical condition.