The total production on all variations of the Model 1839 Paterson Carbine is approximately 950.  Of these, about 650 were purchased by either the United States Government or the Republic of Texas.  This gun is the early production, first type with rounded cylinder.  You will note that it does not incorporate an attached loading lever, rather it has a slot which receives the loading tool that is carried separately.  Also, there is no kickoff slot on the bottom of the barrel lug, which was used to loosen the friction between the barrel and the cylinder pin.  To quote Norm Flayderman "every indication is that this is the model purchased by the Republic of Texas, 1839."  This gun is in very good condition having been thoroughly cleaned and has completely matching serial numbers.  The serial number 181 is found on the back of the barrel, bottom of the barrel wedge, back of the cylinder, rotating collar and the tip of the butt plate.  It is also serial numbered internally throughout, frame, top strap, etc.  The barrel address on the right side of the barrel, is still visible.  It is hard to photograph but it is actually pretty much complete.  I can clearly make out "Patent Arms MG-CO. Paterson N.J. Colt's Patent."  The cylinder is worn but I can still read "Colt's Patent, Patent Arms Many, Paterson Jersey" which is correct for the lettered markings.  The nipples all appear to be original and the barrel is 24 inches, which is the correct full length.  A very historic gun.  SOLD!!