Number 6 of Le Vélocipède Illustré, dated 6 May 1869, carries two advertisements for velocipede lanterns in the same column on page four.
The first is from Brémont et Cie of 30, rue du Colisée in Paris, headed "Inventeurs brevetés S.G.D.G." The firm calls itself the only factory making velocipede lanterns that do not go out, and says it has had very great success with them. It names the Véloce Club de Paris and the house of Michaux et Cie among its customers.
The second advertisement is headed "Lanternes pour Vélocipèdes" and names Ch. Macé of the rue Saint-Maur. His lantern was the most successful on the market, and guaranteed not to go out under the heaviest shaking. Macé also sold bronze pedals of various systems, brakes, oilers, saddles and bags.
Both lanterns were patented S.G.D.G., sans garantie du gouvernement. Those letters turn up on French lamps and fittings well into the twentieth century. They mean that a patent was registered, and nothing further. No one examined it.
Neither firm sold on brightness or on range. Both sold on the lamp staying alight. Macé's advertisement also claims an honourable mention at the Paris exhibition of 1867. That would put a velocipede lantern on show two years before any date in the standard works.
Both lantern advertisements from number 6 of Le Vélocipède Illustré, 6 May 1869. Five weeks earlier, in number 1, only machine builders advertised. Neither advertisement carries a picture of a lamp.
Source: Le Vélocipède Illustré, no. 6, 6 May 1869, p. 4. Bibliothèques spécialisées de la Ville de Paris.
The masthead of the paper's first number, five weeks earlier, already carried a lit lantern at the right end of the handlebars. That engraving is allegorical and says nothing about what any maker sold, but it shows the lamp was taken for granted by April 1869.
Lamps were also sold as a paid extra with a new machine. The two trades ran alongside each other from 1869 onward.