If you wish to supply the serial number,I can look up the date of manufacture for you.The serial numbers for the Springfield trapdoor rifles and carbines are in the general domain for people to find.
With the serial number that you provided,your Springfield model 1873 Trapdoor Carbine was produced in the year 1877.
made 1881
made in 1889
With the serial number that you provided,your Springfield model trapdoor rifle was made by Springfield armory in 1883.
your trapdoor was made in 1878
With the serial number that you provided,your Springfield model 1873 trapdoor model rifle was produced in the year 1875.
made 1884
made about 1875
if it has the original stock you will find the date on the cartouche left side of grip area.
made 1907
Difficult to answer because of the number of variations of the 1873 Springfield Trapdoor Rifle. A good place to start looking to identify your specific rifle is: THE U.S. SPRINGFIELD TRAPDOOR RIFLE INFORMATION CENTER @ http://www.trapdoorcollector.com/
made 1874. if a Carbine it might be around Custers time