you have to provide the serial number
With the serial number that you have supplied,your Springfield model 1873 rifle was made in the year 1874.
With the serial number that you have supplied,your Springfield model 1873 rifle(actually a model 1884) was made in the year 1888.
There is no way of knowing this.All records of the US model 1873 springfield rifle/carbine will not have what regiment was issued which rifle by serial number.
1884
The serial number that you have supplied,indicates that your Springfield model 1873 rifle/carbine was made in the year 1880.
With the serial number that you provided,your Springfield model 1873 trapdoor model rifle was produced in the year 1875.
I can say that your Springfield model 1873 trap door rifle was made in the year 1883 with the serial number that you have provided.
With the serial number that you supplied,your Springfield model 1873 Trapdoor rifle was made in the year 1884.
made 1881
Your serial number indicates that your Springfield model 1873 trap door model rifle was made in the year 1885.I would check to see if you have the next model,which was the model 1884.
blue book of gun values
The Springfield Model 1873, specifically the Custer range serial number 39808, was manufactured in the year 1875. This model is notable for its use during the Indian Wars and the Battle of the Little Bighorn. The Springfield 1873 was the first breech-loading rifle adopted by the U.S. Army.