1849 Massachusetts & California Co. $5 Die Trial. "K-5C." Copper. Plain Edge. AU-50 BN (NGC). Unlisted in the Kagin reference, but assigned the "K-5C" attribution on the NGC insert. This is basically a reverse die trial striking using the reverse of K-5B, the other side of the coin featuring a simple design with the word DOLLARS in an open field surrounded by a denticulated border. The letter A in DOLLARS is repunched, the and letter S is punched in backward. Warm ruddy brown patina throughout, the wreath side with a splash of light verdigris over the right center. Undoubtedly very rare, and a significant find for the specialist.