Not for the moment, I must first see the proof marks on the hidden side of the barrels.

Personally I think that in view of the LF number we are more in the period 1852/1865.
So after the death of Casimir in 1852 and before Laffiteau had is own proofmarks 1865.

It's very difficult to date exactly the arms of Casimir because there existe no Database of what he made. My database is to small for the moment ....

The database of Eugène is big enought to nearly indicate the month of production over the periode 1854 - 1881 (hand guns only)