Equestrian paintings, popular in 19th-century England, feature horses and riders, with large oil paintings in ornate frames fetching higher values than smaller, simpler examples.
Vintage video game consoles, especially rare and unused ones, can sell for thousands, with a Nintendo PlayStation prototype selling for $360K in 2020.
Original copies of Julia Child's 'Mastering the Art of French Cooking' can earn top dollar, especially in good condition with the original jacket, due to their rarity.
Items from the women's suffrage movement, especially those dating back to 1890-1917, are highly valuable, with museum-worthy pieces selling for thousands.
Retro barware from post-WWII America, featuring colorful and graphic designs, is highly collectible, with pieces from companies like Libbey and Federal Glass in high demand.
Vintage two-color pieced quilts, popular in the 1930s and '40s, are highly sought after for their simple, monochromatic patterns and nostalgic charm.
Original concert posters, especially those featuring big-name acts like The Beatles, can sell for thousands, with framed posters being more desirable.
Vintage Milton Bradley board games, especially sealed and unopened ones, can fetch high prices due to their nostalgic value and rarity.
Gilt-framed bull's eye mirrors with eagle motifs, popular in the Federal period, can sell for top dollar, with 19th- and early-20th-century examples selling for less.