This 3" x 5" file card has been signed (and inscribed "Sincerely") on the unlined side by Bill Haley in blue ballpoint or biro pen. The signature is from the collection of veteran collector Stanley Kolowski. There is adhesive residue on the reverse (see inset photo), which partially shows through from the front, as it had been fastened into the recipient's scrapbook for decades. The card is otherwise in very good shape.