For stolen securities, what aspect makes them identifiable?

Stolen securities are identifiable primarily due to their unique serial number. This number serves as a distinctive identifier that links the security to its issuance and ownership. It allows law enforcement and financial institutions to track, verify, and confirm the legitimacy of the security, making it easier to prove ownership and facilitate recovery in case of theft.

While other factors, such as aesthetic value, monetary value, and historical significance, may contribute to the overall worth or importance of the securities, they do not provide a reliable means of identification. For instance, two securities may hold the same monetary value or historical significance but would still have different serial numbers, which distinctly identifies each one. Therefore, it is that unique serial number that is crucial in distinguishing stolen securities in investigations and recovery efforts.