Im a Win collector, your 1860 value depends on condition and factory add on's. a Stock rifle in NRA (Modern) Excellent Brings 20K + or -. Collectors in Houston had a 1866 owned by the Prez of Mexico back in 1876 that had mild/minor factory engraving sold for $120,000.00 USD 16 years ago. Ill by any VG+ 1866 all day for 3 to 5 K.