Illinois Statutes Chapter 30. Finance § 320/2. Facsimile signature; use; legal effect

(a) Any public security, provided that at least one signature required or permitted to be placed thereon shall be manually subscribed, and

(b) Any instrument of payment.

Any authorized officer may designate a deputy in writing manually to subscribe the signature of any authorized officer to any public security or to a certificate thereon to which the signature of the authorized officer is required to be manually subscribed. The written designation of the authorized officer shall be filed with the Secretary of State together with a manual signature, certified under oath, of the deputy designated to sign for the authorized officer.

Upon compliance with this Act by the authorized officer, his facsimile signature has the same legal effect as his manual signature.