TAD B2.3 R.21 :אנה אנתן לכי כסף כרשן 10 באבני מלכא כסף ר 2 לעשרתא‏ : I shall pay you 10 karsh of silver by the royal weight, silver that is 2 quarters to the tenweight
See the entire entry for ˁesrā, ˁsartā n.f. object having ten parts