Set of 2 vintage buttons on original card

Set of two vintage buttons, likely from the early to mid-20th century, presented on their original cardboard backing. The buttons are black with a striking orange center, featuring a concave design in the middle, creating a visually distinct two-tone effect. The buttons are attached to a beige-colored card with a decorative blue border and geometric patterns along the bottom. The card prominently displays the text "LATEST QUALITY FINE." and a stylized emblem with a crown or crest, indicating a brand or quality mark. While not explicitly stated on the card, the appearance suggests they are likely made of plastic, such as celluloid or an early form of bakelite, common materials for buttons during that era.