35 ILCS 516/185
The county clerk shall make out and deliver to the purchaser of any mobile home sold under Section 145, a certificate of purchase countersigned by the collector, describing the mobile home sold, including the vehicle identification number, the model year, and the square footage, the date of sale, the amount of taxes, interest, and cost for which it was sold, and that payment of the sale price has been made. If any person becomes the purchaser of more than one mobile home owned by one party or person, the purchaser may have the whole or one or more of them included in one certificate, but separate certificates shall be issued in all other cases. A certificate of purchase shall be assignable by endorsement. An assignment shall vest in the assignee or his or her legal representatives, all the right and title of the original purchaser.
If the tax certificate is lost or destroyed, the county clerk shall issue a duplicate certificate upon written request and a sworn affidavit by the tax sale purchaser, or his or her assignee, that the tax certificate is lost or destroyed. The county clerk shall cause a notation to be made in the tax sale and judgment book that a duplicate certificate has been issued, and redemption payments shall be made only to the holder of the duplicate certificate.
35 ILCS 516/185