When was Springfield Trapdoor 1873 serial number 264063 produced?
With the serial number that you provided,your Springfield Trapdoor Model was made in the year 1884.
What is the value of an 1884 Springfield Trapdoor with a serial number indicating manufacture in 1885 or 1886 and a cartouche of 1891?
The value of Springfield Trapdoor values in unmodified condition can range from several hundred to several thousand dollars depending on condition. Specific grading factors for which prices are based include originality and condition of metal/wood finish, the quality of the bore, and mechanical function.
Trapdoor Collectors has a bulletin board where there are people who know all about these rifles. Go to www.armscollectors.com there is a Springfield link there, when you select the weapon type and enter the serial number it will tell you what unit your weapon was issued to : Try http://www.trapdoorcollector.com/