A bottle opener.
Design: A seated cat wearing a bow tie and featuring distinctive stripes on its chest. This specific model frequently appeared in bar sets and as a souvenir item during the mid-20th century (circa 1950s–1960s).
Material: Typically cast in nickel silver, silver-plated metal, or pewter. The dark patina and wear are characteristic of older silver plating where the underlying metal has begun to show through.
Available at the link below
https://www.tradera.com/item/750498981