Chasbo, I love the old Winnie's. Here's a link that might offer some more information.

http://www.winchestercollector.org/guns/1886.shtml

The Cody Forearms Museum might be able to help dispel any rumors about the factory condition/options that your rifle was outfitted with.

Good luck, and I wish I had the disposable income to justify your fine rifle.
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..."the clock looked at me just like the devil in disguise"...