made 1884
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 trapdoor rifle was made by Springfield armory in 1883.
Your springfield model 1873 trapdoor was made at springfield armory in the year 1883.
With the serial number that you provided,your Springfield Trapdoor Model was made in the year 1884.
your trapdoor was made in 1874
your springfield trapdoor rifle was made in 1880,with the serial number that you provided.
Your serial number indicates that your Springfield trapdoor model rifle was made in the year 1887.
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.
about 1890
made 1874
made in 1888