Wow !! Not your average '89 there.
Some production numbers according to Brophy;
Of the 55,119 Model 1889's made:
15,440 made in .32-20 caliber
3729 made with 26" barrel (looks like a 26' barrel to me)
2296 pistol grips
854 made with 1/2 magazine
508 made with 1/2 octagon barrel
All in all, a pretty rare rifle you have there. Plus it has condition. A collectors dream !! Congrats on a real beauty.
Good eye - it is a 26” barrel.
I got lucky finding it locally/privately and didn’t think long before pulling out my wallet.
I just don’t see many 1889s in any variation. Show em if you got em!