I just used some fast Google Fu, and I have a couple of questions.
First, the only "Steyr Model 1901" I turned up was of a semi-auto pistol with an internal magazine in a caliber called "7.63 Mannlicher." I don't think that cartridge is still being manufactured.
I turned up references to two different Model 1895 rifles made by Steyr. The first is a straight pull bolt action adopted by a variety of countries as their main battle rifle. The second is the Mannlicher–Schönauer, a turnbolt rifle with an unusual magazine that puts me in mind of the Ruger 10/22.
There is also the Steyr M95, a conventional turnbolt rifle that loaded its ammo in 5 round en bloc clips inserted from the top, with the en bloc clip dropping out a slot in the bottom of the magazine when emptied. The Dutch issued a couple of variants of this rifle to the Netherlands East Indian Army, particularly the carbine version, which was modified to include an integral muzzle brake to reduce the felt recoil for the benefit of the smaller Indonesian soldiers.
I was tempted by one at a gun shop very seriously. It's a well balanced carbine that handles well. Two things finally put me off buying it.
First, I wasn't sure what caliber it was; the stampings on the receiver were confusing. The Dutch first issued the M95 in 6.5x53R. Then many were rechambered for .303 British. After the fall of the Netherlands East Indies, the Japanese took the rifles over and rechambered them for 7.7 Arisaka. The shop owner couldn't say for sure which cartridge it took and could not test it with the three possibilities, having none of the three possibilities in stock. And two out of the three cartridges are obsolete, expensive as hell if you can find them at all, and generally require you to take up reloading if you want to shoot the rifle. Off-putting, at least to me.
Second, the en bloc clips for the M95 are difficult to find, and you can't really shoot the rifle without them. Much as I liked the feel of that carbine, I did not want to hunt for the Holy Grailto get the clips so I could shoot it. I'd been down that road with my early Ruger Mark I target model pistol. Ruger changed the magazine for the later version of that pistol, and trying to find early magazines to fit it was a non-trivial chore.
So I passed on buying the M95 carbine.
As I said, pictures would help a great deal. Left side, right side, closeups of the action from both sides, and a photo of the stampings in the receiver. It would help if you rubbed chalk on the stampings so we could see them better. But I am sure someone on the site will be able to help you out. Lots of us, including me, like to track down the where and whens of old guns.