Need info. on approximate value of an 1849 Pocket Model. It possibly is somewhat rare in that it is .36 caliber, rather than .31. One source I have check has referred to it as an 1865 Pocket Model. It has a 4 1/2"bbl., Serial No. (all matching) is 103XX. Action is very crisp, with cylinder indexing accurately. There are faint traces of original blue.