Michigan Compiled Laws, Chapter 442. Sales § 442.323

(a) The language tending to negate or limit the warranty is not conspicuous, written and contained in a provision, separate and apart from any language relevant to the creation of the warranty, in words which would clearly and specifically apprise the buyer that the seller assumes no risk, liability or responsibility for the authenticity of the authorship of a work of fine art.  Words of general disclaimer like “all warranties, express or implied, are excluded” are not sufficient to negate or limit an express warranty of authenticity of the authorship of a work of fine art, created under section 2   1 or otherwise.

(b) The work of fine art is proved to be a counterfeit, and this was not clearly indicated in the description of the work.

(c) The work of fine art is unqualifiedly stated to be the work of a named author or authorship and it is proved that, as of the date of sale or exchange, the statement was false, mistaken or erroneous.