N.J. Stat. § 2A:61-18
Any deed or deeds of conveyance heretofore or hereafter made and delivered by any sheriff, former sheriff, or other officer of the court, of any real estate, which shall have stood unchallenged on record for a period of 1 year from the date of record thereof, shall be deemed a valid deed for the conveyance of the property therein described, notwithstanding any informality or imperfection in the writ pursuant to the terms of which such sale was made or variance between the date of said deed and the date of acknowledgment or proof of said deed, provided such sale shall have been duly confirmed by the court pursuant to whose writ such sale shall have been made.
Any such deed, or the record thereof, or a certified copy of such record, shall be admissible in evidence in all cases and in all courts of this state.
N.J.S. § 2A:61-18