The Madis numbers can be out as much as 4 years as a few dating lists available are.. I have emailed Winchester, not the Cody Museum to get the actual date for my 2 lettered rifles. Both 1906.
Winchester still has the polishing room records and these show when the action was finished and numbered. Closest number I have to your gun is 190079...made 8-28-1903....next is 203012...made 1-11-1904
With the shape it is in now....shotgun stock rather than a rifle stock, cut back barrel, no colour, wood gouges etc. Only the caliber is worth noting. My estimate for a shooter like this is$250- 350.
With a letter from the Cody Museum, confirming that the gun came from the factory with the special items, it could be worth much more.