Dear friends,I am trying to figure out which numeration system is being used in the 19th-century Śrītattvanidhi attributed to Kṛṣṇarāja Oḍayar III (r. 1799-1868) of the Kingdom of Mysore.Dates are read from right to left, with the rightmost numeral given as a bhūtasaṃkhyā, and the three preceding numerals as syllables. The syllables largely follow the Kaṭapayādi system (https://en.wikipedia.org/wiki/Katapayadi_system), but the syllable for "7" varies more than the system seems to allow for, e.g.:ghaṅachendu: gha (4) + ṅa (5) + cha (7) + indu (1) [Śaka 1754]ṅaghaṭhendu: ṅa (5) + gha (4) + ṭha (7) + indu (1) [Śaka 1745]ghaṅaḍendu: gha (4) + ṅa (5) + ḍa (7) + indu (1) [Śaka 1754]Can anyone identify the system being used here?Best regards,JacobJacob Schmidt-MadsenPostdoctoral Researcher in IndologyDepartment of Cross-Cultural and Regional StudiesUniversity of CopenhagenDenmark