This is a 1923 Piroxloid Products Corp "Ancient Game of the Mandarins" Mahjong in original box. 

Has the original book of various games that can be played dated 1923.  Comes with 144-piece wooden tiles all in excellent shape for the age. Has 93 sticks, dice, other accessories as can be seen in the pictures.

The box is extremely fragile due to the age of this item. Box has had some repairs with tape.  Overall, very nice antique piece. Would be a great addition for the avid game collector. 

The game pieces appear to be made of bamboo.