Every seller, by the mere act of selling, makes a warranty that the seller’s title is good and that the transfer is lawful as to passage of title. A warranty of title may be specifically excluded, or the circumstances may be such as to prevent the warranty from arising. The latter situation is found when the buyer has reason to know that the seller does not claim to hold the title or that the seller is purporting to sell only such right or title as the seller or a third person may have. For example, no warranty of title arises when the seller makes the sale in a representative capacity, such as a sheriff, an auctioneer, or an administrator of a decedent’s estate.