815 ILCS 350/10
Any substitution for or addition to goods described in an inventory filed pursuant to this Act, or any change in the time or place for a sale conducted pursuant to this Act, shall be unlawful and shall void any license issued to conduct a sale pursuant to this Act, and such license shall cease to apply to such sale. In the case of a sale of goods damaged by fire, smoke, water or otherwise, or in the case of an insurance sale or a salvage sale, the goods to be sold at such sale shall be clearly and distinctly segregated, marked or identified, and advertised, if at all, so that both on display and in advertising such goods may be readily distinguished from other stocks, and their identity readily ascertained. Any commingling of such goods with other stocks of the licensee in such a manner to cause the goods to lose their separate identity, either on display or in advertising, shall be unlawful and shall void any license issued to conduct such a sale pursuant to this Act, and such license shall cease to apply to such sale.
No person in contemplation of conducting any going out of business, removal, assignee's or creditor's sale, or during the continuance of such a sale, shall order or purchase any goods for the purpose of selling them at such sale, and any unusual purchase, or additions to the stock of such goods within 60 days before the filing of such application for a license to conduct such a sale, shall be presumptive evidence that such purchases or additions were made in contemplation of such sale and for the purpose of selling them at such sale.
815 ILCS 350/10