Regarding the Belgian Centaures: their maker Fabriques d'Armes Unies de Liège (FAUL) had a license from Sam Colt from the 1850s to make Colt type C&B pistols. Reference Colt BREVETE. This license was never terminated by either party. That same company was selected by W. B. Edwards and Sigmund Shore of Shore Galleries/Centennial Arms Corp. Inc., Lincolnwood, IL during the late 1950s to make the so called "1960 NEW MODEL ARMY" aka Centennial Army aka Belgian Colt 1860 from 1959 to 1973.
Does this old license mean anything & does it make the Centaures Colts? It is my considered opionion that this was more of a marketing gag when it was highlighted in ads in the USA and Europe during the 1960s and 1970s.
Every now and then there are discussions in various forums that FAUL was involved in the making of 2nd gen Colt 1860s. That is wishful thinking but not true. Considering the bloodline and the time of their manufacture - they were made before the what we call today 2nd gen 1860s - you can ague, however, that the Centaure have more gens of the originals from 1860 to 1873. Hence some Centaure aficionados consider them the truer 2nd gen Colt.
We are also aware of a couple of Centaures from the early 1960s in Cavalry, Civilian & RNMA configuration with proper Colt markings from the 1860s. A few that we inspected were scroll engraved. One Cavalry is known with true ivory grip and matching shoulder stock. These colterized Centaures are the work of one Thomas Haas, US gunsmith and Colt restorer. He made them for the collections of both Edwards and Shore. Some of these pieces of art recently surfaced at US auctions.
Regarding Dixon made flasks: FAUL purchased & sold Dixon marked powder flasks to be used together with there Centaure pistols. If you are lucky you will find at an auction or a pawn shop one of the very rare cased Centaure sets with Dixon flask and FAUL marked iron bullet mold for round and conical balls.
My 2 € cents respectfully added.
Long Johns Wolf