Hi Steven, thanks for the size information of your weight.
I have looked at several books and bulletins covering Bohemia / Silesia / France. I conclude that your weight was made in the Grenelle factory in France, 1854/1855 to shortly after 1856.
Features that I found interesting in your weight were:
- small size and low dome (but height ok compared to diameter)
- rather untidy setting of several canes (spacing and slippage)
- garland of canes not fully alternating (2 canes the same in one larger space)
- central cane has odd looking central feature (looks like a set of "trails")
- two white "cog canes" with 11 teeth
That last feature (11 teeth) is now accepted by collectors as a marker for the Grenelle factory. In addition, the overall design, and the individual canes, fit well with several weights shown in a confirmatory article on Grenelle weights in the 2012 PCA Bulletin, written by Philippe Frère. The article pulled together earlier research on the Grenelle factory and its close links to the St-Mandé works.
A Board search in the Paperweights sections for "grenelle" or "mande" or even "charles bredgen" will provide earlier discussion.