Hello. Share certificates are valuable documents, but it may so happen that they get lost at some point. Publishing a lost share certificate ad in a newspaper helps to make the general public aware that a share certificate has been lost and that they should be observant. Given that this ad informs people about the lost share certificate, it is indeed possible that a person may come across the certificate. That being said, publishing a notice in a newspaper can certainly contribute to the potential recovery of the lost share certificate.