N.J. Stat. § 54:5-52.3: Effect of duplicate certificate; cancellation on finding of original

The said duplicate certificate shall be valid and effectual to all intents and purposes as though it were the original; and in the event the original certificate is thereafter found the same shall be cancelled forthwith by the proper officer of the municipality.

L.1940, c. 90, p. 220, s. 3.