Unidentified commentary on Samāsapāda of Kātantra / Kalāpa Vyākaraṇa

It is a commentary on the Samāsapāda (2.5) of Nāmni Catuṣṭayam section of Kātantra or Kalāpa grammar. Folios after the 18th are missing. Extent and format of original and physical characteristics: 18 Folios; Appears to be an incomplete MS. No colophon found.; Extremely fragile. The original size of the folios are 35X8 cm.