A Brussels jeweler, M. Opitz, attended to two well-dressed men in his shop the other day and displayed for their inspection several quality gems, among which was a $8,500 brilliant. The couple inspected the stone minutely and agreed to return next day and purchase it. Shortly afterward it was noticed the brilliant seemed to have lost some of its fire and a closer examination showed that it was not the original brilliant at all but a piece of cut glass that had been cleverly substituted for it.
Source: The Jewelers' Circular - 17th November 1917
An example of the mark of Bousin-Bonnevie (L.N. Bousin & Emile Bonnevie):
Member oel wrote:
Silver fineness A(rgent)800/00, self-applied by the silversmith . Maker's mark BB (monogram) for Bousin-Bonnevie Bousin Éd, silversmith, active in the Belgian city of Schaarbeek, 1878-1911.
Source: Walter van Dievoet Algemeen repertorium van de edelsmeden en van de merken van edelsmeedwerk in België, page 66.
Examples of the work and mark of Georges Charles Armand Brakmyn:
A830 - 262/g
Member oel wrote:
I guess, the candelabra weight of silver 830/000 without the weight at the base ( base filled), is 262 gram.
Belgium maker's mark, barrel shaped shield for; Georges Charles Armand, registered in the city of Oostende, 1949- circa 1953
Made in Belgium, Brussels. The maker's mark OAB in a barrel for; Joseph Anysz, Brussels, Anysz J. sprl(société à responsabilité limitée), registered 1949- ca 1996.
Source; Walter van Dievoet Algemeen repertorium van de edelsmeden en van de merken van edelsmeedwerk in België. Vol. III: 1942-1997. / Repertoire general des orfevres et des marques d’orfevrie en Belgique.
The barrel shaped mark LR with an eagle in between is a Belgian retailer/maker's mark. LR for Jean Louis Roosen, working in Brussels, 25-5-1949- ca. 1971.