This is a very early, transition Lemat, which is basically a first model with the loading lever mounted on the left side.  It is actually a very rare variant.  You will note that the barrel is not part octagonal and round but round throughout its length.  This is correct.  The completely round barrel variant is not often seen but is one of the distinct variations in early Lemats.  This gun has matching numbers on the barrel, frame, cylinder, shotgun barrel, etc.  The loading lever and plunger are also numbered but the ramrod for the shotgun barrel is not and I think it is a replacement.  The gun is well used with numerous dents and dings and a heavy patina.  The barrel address is still visible and reads "Col. Lemat BTE. S. G. D. G. Paris"  The coining is still visible on the front edge of the cylinder and the grips show wear but are still solid.  The action still functions with a few hiccups here and there.  Rifling is still visible in the bore and the gun has a good look overall.   SOLD!!