Vintage St. Louis Cardinals Busch Stadium Commemorative Sticker

This is a rectangular commemorative sticker or stamp featuring a retro design celebrating an event at Busch Stadium on September 15, 1969. The item features a primary color palette of blue, yellow, red, and green. The central graphic depicts a stylized baseball diamond with a green field and a red pitcher's mound against a yellow background. The text 'DO YOU REMEMBER?' is displayed in a white, blocky font atop a red banner, followed by 'BUSCH STADIUM' in red san-serif lettering. The date 'SEPTEMBER 15, 1969' is printed in blue at the bottom. The entire design is encased within a dark blue outer border that appears to have a subtle decorative pattern. Based on the printing quality and halftone patterns visible in the red and yellow sections, this piece likely uses a four-color offset printing process. The material appears to be a standard semi-gloss paper stock common in mid-to-late 20th-century ephemera. The condition shows minor surface wear consistent with age, though the edges remain relatively sharp and the colors appear vibrant with no significant fading or tearing. This date is significantly noted in St. Louis Cardinals history as the night Steve Carlton struck out 19 batters, setting a Major League record at the time despite a loss to the Mets.