hallmarked

/ˈhɔːlmɑːrkt/
adjective
  1. Stamped with an official hallmark, especially on precious metals.
    • She bought a hallmarked silver necklace from the antique shop.
    • The hallmarked bracelet came with a certificate of authenticity.
    • Only hallmarked gold can be legally sold as pure in many countries.
  2. Having a distinctive feature that is typical of something or someone.
    • His hallmarked style of storytelling captivated the audience.
    • The restaurant's hallmarked dish is its wood-fired pizza.
    • Her hallmarked optimism helped the team through difficult times.
Antonyms
What does "hallmarked" mean? | whatsthatwordmean | whatsthatwordmean