The article explores the North American debate on the Uniform Negotiable Instruments Law of 1896, part of the late nineteenth century discussion on legislative methods and law’s unification, focusing on the transnational influences of the Partial Codes model, as applied to the subject of commercial law. The essay aims to display how the method of partial codification, already experimented in Colonial India and also adopted in England in the matter of negotiable instruments, was selected by the National Conference of Commissioners on Uniform State Laws as a powerful (and admissible) instrument for the systematization of both legislation and case law, within a wider discourse, that involved both sides of the Atlantic, on the circulation of credits and capitals and the development of modern global markets (1889-1903).