The International Silver Company P699 mark is found on silverplate or sterling pieces produced by the International Silver Company, a major American silver manufacturer established in the late 19th century. This mark includes the company name and the pattern or model number “P699,” which identifies a specific design within the company’s catalog. While many International Silver items are silverplated, some are sterling—confirmation typically requires a separate “Sterling” stamp. The “P699” number is essential for identifying the pattern, dating the piece, and verifying its authenticity within the broader context of the company’s production. Collectors often use this mark to track down matching items or assess historical and market value.