The modern Mexican peso (MXN) was introduced in 1993 (replacing the MXP at 1,000:1). A "new peso" coin dated 1882 cannot exist—it would be a fantasy piece, replica, or altered coin. The 1880s used the peso fuerte (silver) and gold coins under the Porfiriato; any 1882-dated piece would be from that era, not the "nuevo peso" series. Numismatic value depends on actual type, metal, condition, and rarity—not the misprinted date alone.