This page features two one rupee coins of Republic India: the scarce 1990 Dr. B. R. Ambedkar issue struck as a mule — a coin made from a mismatched pair of dies — alongside an early 1954 one rupee.
Mule coins happen when a die intended for one design is paired with another, producing a variety that was never meant to leave the mint. Collectors prize such errors precisely because they are unintended and turn up only rarely; early Republic dates like 1954 are sought for their age and dwindling supply in good grades.
Value on coins like these turns on the exact variety, the date and the state of preservation — a genuine mule or a crisp early date sits well above an ordinary circulated piece. Coinbazzar lists verified examples so you can confirm the variety before buying. See the live listing on this page for the current price.