The 1885, I dunno when made, it was 45-60, someone reamed it out to 45-70. The 1873 was made in 1886 and is a 44-40.
I paid $1500 + $64 shipping for the pair.
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway The man who makes no mistakes does not usually make anything.-- Edward John Phelps