This mah jongg set is probably from the 1970s based on the publishing date of the included booklet "That's It".

Included:

152 wooden tiles with Chinese symbols

10 wooden tiles that say Big Joker

2 dice

4 plastic trays

2 booklets with handwritten marginalia

Handwritten pages that seem to explain more about playing the game.

The box is in poor condition with heavy wear and broken corners.

This set does NOT include plastic coins or tally sticks. I'm not sure this model ever had them.