The transferee of a negotiable tangible document of title has a specifically enforceable right to have its transferor supply any necessary indorsement, but the transfer becomes a negotiation only as of the time the indorsement is supplied.
13 Pa.C.S. § 7506
Delivery without indorsement; right to compel indorsement
Known as the Uniform Commercial Code
The act spans §§ 13–13 (634 sections).
Official source: Pennsylvania General Assembly. Reproduced from public-domain Pennsylvania statutes; confirm against the official source for the current text. Not legal advice.