In the following cases, a non-owner can convey better title to the bona fide purchaser of goods for value:
(1) Sale by a Mercantile Agent: A sale made by a mercantile agent of the goods for document of title to goods would pass a good title to the buyer in the following circumstances; namely;
(a) If he was in possession of the goods or documents with the consent of the owner;
(b) If the sale was made by him when acting in the ordinary course of business as a mercantile agent; and
(c) If the buyer had acted in good faith and has at the time of the contract of sale, no notice of the fact that the seller had no authority to sell (Proviso to Section 27 of the Sale of Goods Act, 1930).
(2) Sale by one of the joint owners (Section 28): If one of several joint owners of goods has the sole possession of them by permission of the co-owners, the property in the goods is transferred to any person who buys them of such joint owner in good faith and has not at the time of the contract of sale notice that the seller has no authority to sell.
(3) Sale by a person in possession under voidable contract: A buyer would acquire a good title to the goods sold to him by a seller who had obtained possession of the goods under a contract voidable on the ground of coercion, fraud, misrepresentation or undue influence provided that the contract had not been rescinded until the time of the sale (Section 29).
(4) Sale by one who has already sold the goods but continues in possession thereof: If a person has sold goods but continues to be in possession of them or of the documents of title to them, he may sell them to a third person, and if such person obtains the delivery thereof in good faith and without notice of the previous sale, he would have good title to them, although the property in the goods had passed to the first buyer earlier. [Section 30(1)]
(5) Sale by buyer obtaining possession before the property in the goods has vested in him: Where a buyer with the consent of the seller obtains possession of the goods before the property in them has passed to him, he may sell, pledge or otherwise dispose of the goods to a third person, and if such person obtains delivery of the goods in good faith and without notice of the lien or other right of the original seller in respect of the goods, he would get a good title to them [Section 30(2)].
(6) Effect of Estoppel: Where the owner is estopped by the conduct from denying the seller’s authority to sell, the transferee will get a good title as against the true owner. But before a good title by estoppel can be made, it must be shown that the true owner had actively suffered or held out the other person in question as the true owner or as a person authorized to sell the goods.
(7) Sale by an unpaid seller: Where an unpaid seller who had exercised his right of lien or stoppage in transit resells the goods, the buyer acquires a good title to the goods as against the original buyer [Section 54 (3)].
(8) Sale under the provisions of other Acts:
(i) Sale by an Official Receiver or Liquidator of the Company will give the purchaser a valid title.
(ii) Purchase of goods from a finder of goods will get a valid title under circumstances [Section 169 of the Indian Contract Act, 1872]
(iii) A sale by pawnee can convey a good title to the buyer [Section 176 of the Indian Contract Act, 1872]