गोशीर्षकं कालताम्रं मत्स्यगन्धि ॥ कZ_०२.११.४४ ॥
gośīrṣakaṃ kālatāmraṃ matsyagandhi
(ചന്ദനത്തിന്റെ വകഭേദങ്ങൾ:) ഗോഷീർഷകം, കറുത്ത-ചെമ്പുനിറം, മത്സ്യഗന്ധമുള്ളത്।
Because the state needs to recognize and classify all trade-circulating varieties, including lower-grade stock, for pricing and tax purposes.
They limit discretionary appraisal by giving shared, checkable criteria for categorizing consignments.