Indic Siyaq Rupee Mark at U+1ECB0 is a historic accounting sign for the rupee in the Indic Siyaq numerical notation system. It is part of the Indic Siyaq Numbers block, which encodes specialized numerals and monetary marks used in South Asian commercial and administrative records. Its main use is in the transcription and digital preservation of manuscripts, account books, revenue documents, and archival ledgers from regions where siyaq-style bookkeeping was practiced. In those sources, the mark identifies rupee amounts alongside Indic Siyaq numerals, helping distinguish monetary values from counts, weights, or other recorded quantities. Today it is rarely typed in ordinary financial writing, where modern currency symbols and alphabetic abbreviations are used instead. It matters most to historians, archivists, epigraphers, manuscript cataloguers, and font developers working with premodern or early modern South Asian accounting material; support can be uneven, so missing-font boxes are more likely than with common currency signs.