Under the Sale of Goods Act, 1930, where document of title is transferred to a person as buyer or owner…

The proviso to Sale of Goods Act section 53(1) concerns a document of title lawfully transferred to a buyer or owner and then taken by another in good faith for consideration. A sale transfer defeats the unpaid seller's lien or stoppage; a pledge or other disposition for value takes priority. A gratuitous or bad-faith transfer does not satisfy that proviso.