What is the meaning of 株札?

kabufuda; small, rigid Japanese playing cards, a single deck consisting of 40 cards with values ranging from 1 to 10, used for playing hand-comparing betting games such as おいちょかぶ (oichokabu).

A wooden token given to members of a (かぶ)(なか)() (kabunakama), a type of merchant guild from the Edo period, used to prove their membership and allow certain benefits.

Source: wiktionary.org