Definition of "ryō"

He pulled three gold ryō out of his pocket, made a hole in one of them with a short sword, and gave it to the child to play with.

2001, Monumenta Nipponica, volume 56, Sophia University, page 35

When he started off to go anywhere, which he frequently did quite casually, he always had two ryō in his pocket, which he explained, was for burial fee.The 1962 edition uses ryo.

2011 , A[rthur] L[indsay] Sadler, The Japanese Tea Ceremony: Cha-No-Yu, Tuttle Publishing

In the early seventeenth century, an ordinary town maid’s wage was 1.5 ryō a year; in the 1740s, it was 2 ryō a year. By the second decade of the nineteenth century, a maid generally received two to three ryō or, at most, three and a half ryō per year.

2014, Cecilia Segawa Seigle, Linda H. Chance, Ōoku: The Secret World of the Shogun’s Women, Amherst, N.Y.: Cambria Press