This chapter applies to all sales of and offers to sell works of multiple art between an art supplier and an art dealer or between an art dealer and a buyer, if any portion of the transaction occurs in Wisconsin, including deliveries into or from Wisconsin and solicitations by mail or telephone where the solicitor or buyer is in Wisconsin.
Wis. Admin. Code Department of Agriculture, Trade and Consumer Protection ATCP 117.01
Sale solicitations by mail or telephone may also be subject to regulation under ch. ATCP 127 and under ch. 423, Stats.