Collectible stocks refer to shares of companies that are considered rare or unique, often due to their historical significance or limited availability. These stocks can include shares from defunct companies, early technology firms, or those with notable events tied to them. Collectors often seek these stocks for their investment potential or as a piece of financial history. Investing in collectible stocks can be similar to collecting art or antiques, where value is determined by rarity and demand. While they may not provide regular dividends like traditional stocks, their worth can appreciate over time, making them appealing to certain investors and collectors.