Stock from 1901

[steelcmg]

My grandmothers mom past away a few months ago and while she was goin thru a bunch of her stuff she found a stock from Red Bank Telephone company located in PA from 1901 the company was bought out around 1910. I forget the exact name of that company that cought them but they are still around. Im just wondering if the stock could still be worth anything or is it just a piece of worthless paper.