2500 Tögrög Year of the Rooster

Mongolia's lunar series coins were produced in partnership with external minting facilities — the Bank of Mongolia having no domestic fine gold striking capability — and the 2005 Rooster issue falls within a wave of collector-oriented releases timed to the Chinese lunisolar calendar cycle. The series drew heavily on diaspora and Asian collector markets rather than domestic circulation demand.

At 7.7760 g of .9999 gold, the weight corresponds precisely to one quarter troy ounce — a deliberate alignment with internationally traded bullion increments to broaden secondary market liquidity.