1969 US 6c Plant for More Beautiful Highways Stamp #1367 Used Cancelled

This listing is for a used, cancelled copy of the 1969 6-cent "Plant for More Beautiful Highways" postage stamp. Issued on January 16, 1969, in Washington, DC, this stamp was part of a four-stamp se-tenant block publicizing First Lady Lady Bird Johnson's program for the Beautification of America.
Item Details:
Scott Number: #1367
Issue Date: Jan 16, 1969
Condition: Used / Cancelled (as shown in photos)
Design: Features a scenic landscape of a highway lined with bright yellow California Poppies, encouraging Americans to take pride in their environment through planting.
This vintage stamp is a charming addition for collectors of environmental history, floral themes, or 1960s US commemoratives.

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