Definition
In French financial and commercial law, the coulisse was the unofficial, curb-side securities market operating in Paris alongside the official Bourse. It functioned as an informal trading venue where unlicensed brokers — known as coulissiers — dealt in securities, particularly those not admitted to the official exchange or traded after official hours. The coulisse occupied a recognized but legally ambiguous position: tolerated by authorities for much of its history, yet operating outside the formal regulatory framework governing the official agents de change. It was eventually absorbed into the regulated exchange structure in the early twentieth century.
Common Language
Modern common usage (Wiktionary): A piece of timber with a groove in which something glides; a fluting in a sword blade; a side scene of the stage in a theater or the space between the side scenes.
Historical common usage (Webster's 1913): A piece of timber having a groove in which something glides; one of the side scenes of a theater stage, or the space between the side scenes.
The ordinary English meaning — a grooved timber, a theatrical wing — shares nothing with the legal and financial meaning. The financial sense derives from a French term of art that entered English-language commercial and legal writing through coverage of the Paris Bourse. A researcher encountering "coulisse" in an American or British legal text almost certainly finds it in a commercial or financial context, not a construction or theatrical one.
Common Confusion
Coulisse is sometimes loosely equated with any informal or over-the-counter securities market. The term is specific: it refers to the Paris curb market and its institutional arrangements, not to informal securities trading generally. Researchers should also distinguish the coulisse from the official Bourse and from the agents de change, who held government-licensed monopoly positions in official trading. The coulissiers operated in deliberate parallel to — and in competition with — that monopoly.
Why It Matters in Research
The term appears almost exclusively in one narrow slice of the Law Mind corpus: late nineteenth and early twentieth century commercial law materials, financial journalism, and comparative exchange regulation literature. Bouvier's gloss is minimal ("the curb market"), which reflects how lightly American law dictionaries treated French market structures. Researchers working on the history of securities regulation, exchange monopolies, or comparative financial law will find "coulisse" as a term of art requiring French commercial law context that American legal dictionaries do not supply.
Two research traps are worth flagging. First, keyword searches for "coulisse" in English-language sources will produce sparse results; the concept often appears in translated or paraphrased form as "curb market," "outside brokers," or "free market." Second, the timeline matters: the coulisse's legal status shifted considerably between the 1870s and 1898 (when French legislation forced partial reorganization) and again through early twentieth century reforms. A source's date determines which regulatory regime it describes.
The coulisse is also a useful comparative reference point for understanding American curb market history — the New York Curb Market, predecessor to the American Stock Exchange, developed in rough parallel and is sometimes discussed alongside the Paris coulisse in comparative exchange literature of the period.
Historical Dictionary Support
Bouvier's entry is a single sentence, citing the Standard Dictionary for support. It correctly identifies the coulisse as the Paris curb market but provides no structural or legal detail. This brevity is characteristic of how American legal dictionaries of the period handled foreign financial institutions — acknowledging their existence for the benefit of practitioners reading international commercial documents, without attempting substantive explanation.
No other major English-language legal dictionary in the historical shelf gives the coulisse extended treatment. The most useful historical sources for the term's legal content are French commercial law treatises and contemporary financial journalism, neither of which is typically indexed under legal dictionary headings. Researchers should treat Bouvier's entry as a signpost, not a source.
Jurisdictional Note
The coulisse is a French institution with no direct American or English legal equivalent. References to it in American legal materials are invariably comparative or descriptive. Its regulatory history is governed entirely by French law, including the legislation of 1898 and subsequent reforms consolidating exchange functions.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia — Securities Markets; Exchange Regulation