Congrats on the 1898.  Hows about posting some pictures so we can share in your joy?

What is the serial number if I might ask?  I'm curious why you think the serial number is dated 1902 with an 1899 cartouche.  The stock may have been swapped during a rebuild.  It may have been issued with the 1901 sight, but it may have been issued with an 1896 or 1898 sight also, and was changed during a rebuild.  Really, any of those would be correct, and could be quite common.  Value could be determined by condition and correctness.  If it's been tampered with, or sporterized, that would drastically affect value.  Did you find anything in the butt trap?