SRS Lookup

[Patrick Chadwick]

Any details on the following?
...
Springfield 45/70 Trapdoor S/N 517511. Lock plate dated 1884.

Thanks

Made mid-1891
(1871 numbers 502492-533633 according to Frasca & Hill P.378)
Fiscal Year 1890-91 ended 30. June 1891. 516124 last number for that fiscal year (P.379)
So, assuming steady rate of production and extrapolating from that date:

2nd week of July 1891.