Are there any initials on the underside of the tubeset? Even though the marks are faint, could you pleasure us with an image of the underside of the tubes. It is a Roux action variant and looks to be Nr. 26 so if that is his serialization sequence, whether he made it or sourced it, it was early on and about the time he hung out his gunmaking shingle.

Kind Regards,

Raimey
rse