That is a great first card.
What a way to start the set. Whenever we discuss which T206 is the most attractive card, the two that are always mentioned are that Mathewson and the Cobb bat off the shoulder.
By the way there is a recent book on the set including biographies of the players. I'm finished with my copy, so if you want it you can have it ( no charge of course). PM if you want it.
Good luck with the set. I hope you have as much fun collecting as I have had.