Indic Siyaq Prefixed Six

It marks six before a larger unit. In 𞲨𞱺, the six sign comes before the ten sign to write 16.

Persian clerks shortened number names into hard-to-read account marks. Unlike abjad, which assigned number values to letters, siyaq used special signs. Broader use is attested in financial records from the early 10th century; a Persian tax receipt dated 1169 is another example. In South Asia it was called raqm or rakam, Arabic for “account.” It was common under Mughal rule by the 17th century and lasted into the middle of the 20th century.