mileage authenticity

When the original owner, "Jeff," passed away in 1991, he willed his 1959 Olds Ninety Eight to his stepdaughter Dolores. Neither Dolores or her brothers desired to keep the low mileage Olds, so they placed a FOR SALE ad in the Rocky Mountain News. When I purchased the car, Dolores agreed to sign a statement of authenticity and had it notarized. In the document below, the names have been blurred to maintain confidentiality. In the statement, Dolores and her brothers swear that the mileage at the time of sale was 4,524 miles and that her stepfather "Jeff ....." was the sole owner of the car.