Greeting Card Company; a Stamp on Precious Metal

This page is the CodyCross answer for the clue below from Rainforest, Group 1220, Puzzle 5 (Peace Lilies).

Question is: Greeting Card Company; a Stamp on Precious Metal

and the answer is: HALLMARK

Word Meaning:

HALLMARK — (figurative) A distinguishing characteristic.

Definitions from Wiktionary.