Scrip

I must to explain for my children about this words.

Scrip is any substitute for currency which is not legal tender, and is often a form of credit. Scrips were created as company payment of employees and also as a means of payment in times where regular money is unavailable, such as remote coal towns or occupied countries in war time. When U.S. President Andrew Jackson issued his Specie Circular of 1836, due to credit shortages, Virginia Scrip was accepted as payments for federal lands. Other forms of scrip include subway tokens, arcade tokens and tickets, and "points" on some websites.
Scrips have gained historical importance and become a subject of study in numismatics or exonumia due to the fact of the wide variety and abundance of them.Scrip is any substitute for currency which is not legal tender, and is often a form of credit. Scrips were created as company payment of employees and also as a means of payment in times where regular money is unavailable, such as remote coal towns or occupied countries in war time. When U.S. President Andrew Jackson issued his Specie Circular of 1836, due to credit shortages, Virginia Scrip was accepted as payments for federal lands. Other forms of scrip include subway tokens, arcade tokens and tickets, and "points" on some websites.
Scrips have gained historical importance and become a subject of study in numismatics or exonumia due to the fact of the wide variety and abundance of them.

(From: Wikipedia, the free encyclopedia)

Thank you to " Knicksgrl0917 " for your comments at my post. Good luck at Cali.