Five, 10, 25, and 50 halalah pieces go into circulation.
From the Dec. 27, 1972 edition of the Sun and Flare
Four new Saudi Arabian coins went into circulation last week -- 5, 10, 25, and 50 halalah pieces, equivalent to 1, 2, 5, and 10 qirsh. (there are 100 halalah to each Saudi Arabian riyal.)
Like the 1, 2, and 4 qirsh pieces they will eventually replace, the new Saudi Arabian coins bear the crossed sword and palm symbol on one side, and their denomination on the other.
However, they differ from the older coins in that the denomination is given in both Arabic and Western numbers. The coins are made of copper and nickel and are slightly smaller in size than their equivalent qirsh pieces, which, over a period of time, will be withdrawn from circulation.
At present, however, these 1, 2, and 4 qirsh pieces will continue as legal currency.
— The Arabian Sun: December 28, 2022