N.Y. GBS Law § 586

§ 586. Substitution, addition and commingling of goods; license void;\ncertain purchases prohibited. (a) Any substitution for or addition to\ngoods described in an inventory filed pursuant to this article, or any\nchange in the time or place of a sale conducted pursuant thereto, shall\nbe unlawful and any license issued for such sale shall thereupon become\nvoid.\n (b) Where an applicant, conducting a sale licensed under this article,\nalso conducts a business of selling other goods, wares or merchandise\nnot included in the inventory accompanying the application, the goods,\nwares and merchandise to be sold at such sale shall be clearly and\ndistinctly segregated, marked or identified, and advertised, if at all,\nso that, both on display and in advertising, such goods, wares and\nmerchandise may be readily distinguished from other goods, wares and\nmerchandise and their identity readily ascertained. Any commingling of\nsuch goods, wares and merchandise with other goods, wares and\nmerchandise of the licensee in such a manner as to cause them to lose\ntheir separate identity, either on display or in advertising, shall be\nunlawful and any license issued pursuant for such sale shall thereupon\nbecome void.\n