Here's the game with the wooden pieces in place. They are wooden discs with little stems. The Frantz sticker on the reel is a slightly older iteration than the Hustler version shown in the OP. Frantz sold the marketing rights to Hustler in 1925 I think. The original game was made in 1923. The games are otherwise identical I believe.
I find it interesting as well that Frantz Manufacturing is still in business in the same location, Sterling, Illinois.
http://www.frantz-mfg.com/