This is a vintage commemorative postal cover from Poland, dated May 21, 1965. The envelope features purple ink stamps indicating "START ETAPU WYŚCIGU" (Start of Race Stage) and "XV POKOJU" (15th Peace Race), with "KLUCZBORK" clearly visible in a shield-shaped postmark, marking the start of a stage in the historic Peace Race cycling event. The cover also includes a 60 Groszy stamp depicting "ELEKTROWNIA W TUROSZOWIE" (Turoszów Power Plant), issued in 1964.

This collectible piece is a unique artifact for enthusiasts of cycling history, philately, and Polish historical memorabilia related to the renowned Peace Race, a significant amateur stage race. The item includes the vintage paper envelope with its original stamps and postmarks as pictured. It is a genuine piece of printed material from the era, offering a tangible connection to the 1965 event.