Great shotguns. One of my favorites. I just shot one of mine, a 1903 mfr, again yesterday at skeet. A weekly endeavor though just for the fun of it.
I lightened the mainspring on mine a bit to make the action easier to work. Well used when I got this one, I've shot 1000's of additional rounds through it on the range. The only part that ever broke was the somewhat fragile ejector.
Some people maintain that the action/bolt will scar the thumb of the shooters hand if not held just right. I've never had that problem. Just handle it like any other shotgun.
Make sure the firing pin disconnect works & the FP is in one piece and not jammed forward. You could have surprise firing upon closing the action.,,and the bolt may not be entirely locked.
Major parts are available at times but pricey. A few changes internally through the years of production so getting correct parts is sometimes a chore. The newest of these will be just over 50 years old,,the oldest over 100.
Solid frame models usually get a few more dollars than the more common take down. 16ga was made also. Both gauges were made with damascus barrels as an option for quite a few years.
Win Model 12 barrels can be fitted. Same thread but you have to use the 97 barrel extension and forend assembly. Not a home workshop project to change out.
