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/
With the serial number that you supplied,your Springfield model 1873 Trapdoor rifle was made in the year 1884.
With the serial number that you provided,your Springfield model 1873 trapdoor model rifle was produced in the year 1875.
The first model was the model 1873.It was produced from 1873-1877.
is it a Springfield rifle ???? if so, then the bayonet is removable.......
10-1000 USD or more depending on specifics
Your springfield model 1873 trapdoor was made at springfield armory in the year 1883.
Less than 100 to multiple thousands of USD depending on specifics
your trapdoor was made in 1874
Depending on the overall condition of your Springfield Trapdoor model 1873,or 1884.These old rifles will bring 750 dollars and up.
With the serial number that you provided,your Springfield Trapdoor Model was made in the year 1884.