Patent dates have little to do with the date a gun was manufactured. For instance, the 1888 patent date refers to when the Browning patent was sold to Winchester; the 1892 date refers to the patent for the takedown feature; the 1911 date relates to an improvement in the magazine tube. Your gun was manufactured in 1903-if the Madis dates can be believed. They're sometimes off a little, but this is close enough. Model 1890's were also caliber specific: chambered for .22WRF, .22 long, .22 short, and late in production, .22 long rifle. The carrier was specifically made for the length of the shell specified and would not accept another length. If you intend to shoot the gun, be sure to use ONLY the cartridge specified on the barrel. Depending on the reference you choose to believe, the '90 totaled between 775k and 815k guns, production ceasing in 1941. Early on it was offered with many special order options and the first model receivers were case colored. All this and more info. can be found in Ned Schwing's 2 volume book "Winchester Slide-Action Rifles", vols. 1+2. The special order and/or case colored rifles can-in 90% + condition-be worth several thousand dollars or more. I've owned several '90's but currently have two shooters, one chambered short and the other long. Both have Lyman tang sights and are accurate and fun to shoot. Plus,best of all, they're Winchesters-what more could anyone want? -Asa