Are numismatic coins valuable?

Have you ever wondered if those old coins collecting dust in your grandfather's attic are worth anything more than sentimental value? The question of whether numismatic coins are valuable is a fascinating one that often sparks debates among collectors and investors alike. So, what makes a numismatic coin valuable? Is it the age, rarity, condition, or historical significance? Join me as we delve into this intriguing topic and uncover the secrets that lie within the world of numismatic coins.