Earlier, the family of the survivor received an email from gerontology is Research Group. This is an international group of researchers who observe people older than 110 years and sends their lists in the Guinness Book of records.

To obtain the title of most elderly man of the world, was required to provide proof of age. Such documents must have been received by the applicant before reaching the age of 20. First, these papers Crystal was not, but recently in Poland have found the necessary document.