Mahabharata 3.175.14

गुहाकारेण वक्त्रेण चतुर्दंष्ट्रेण राजतादीप्ताक्षेणातिताम्रेण लिहन्तं सृक्किणी मुहुः

guhākāreṇa vaktreṇa caturdaṃṣṭreṇa rājatādīptākṣeṇātitāmreṇa lihantaṃ sṛkkiṇī muhuḥ

Our plain-language meaning of this verse is waiting for scholar review.