a book that is not commonly found or has a limited edition

a book that is valuable due to its age or uniqueness

एक किताब जो अपनी उम्र या विशिष्टता के कारण मूल्यवान होती है

English Usage: He discovered a rare book that was over a century old.

Hindi Usage: उसने एक दुर्लभ किताब खोजी जो एक सदी से अधिक पुरानी थी।