New York Consolidated Laws, General Business Law - GBS § 93. Duplicate receipts must be marked “duplicate”

A person mentioned in sections ninety and ninety-one, who issues any second or duplicate receipt or voucher, of a kind specified in those sections, at a time while a former receipt or voucher for the merchandise specified in such second receipt is outstanding and uncanceled, without writing across the face of the same the word “duplicate,” in a plain and legible manner, is guilty of a misdemeanor.