Exchange. Replace personal property by trade or trade-in with the supplier of the replacement property. To exchange non-excess, non-surplus personal property and apply the exchange allowance or proceeds of sale in whole or in part payment for the acquisition of similar property. For example, the replacement of a historical artifact with another historical artifact by trade; or to exchange an item of historical property or goods for services based on the fair market value of the artifact.
32 CFR § 273.3
Unless otherwise noted, these terms and their definitions are for the purpose of this subpart.