For a long time M91 and M91/30 rifles were the Rodney Dangerfield's of milsurp collecting. Second only to Japanese and Italian milsurps. At first it was a definite lack of the rifles in Canada and even less ammunition to go into them. Not only that all of North America was in a "Sporterizing" frenzy. The above mentioned rifles were difficult to turn into nice looking hunting rifles when only basic hand tools were available. I know it's sacrilege to mention this but some incredibly nice sporting rifles have used military surplus actions and barreled actions as a base to start from. There was actually a time when you could save money by purchasing some of the do it yourself kits that were available at very reasonable prices. Sherwood Industries used to have a great kit made up of surplus 98 receivers that had the rear bridge and receiver rings machined to accept FN style ring bases, new adjustable triggers, barrels chambered for four different cartridges, including the 7mm Rem Mag, new trigger guard w/hinged floorplate and a very straight grained but drop in unfinished walnut stock that only needed the final sanding and finishing. All out of California, shipped to your doorstep for under $100. It saved about $35 on a new factory off the shelf sporter. For many in those days that was a full day or two of wages.
Now of course history buffs and cheap ammo have made these same rifles much more desirable. The history behind them is fascinating as well.
Finn markings are the flavor of the year at this point but in reality they really aren't much better than any other well maintained Mosin in similar condition IMHO.
I like all the variants of Mosin Nagants. The Chinese variants aren't very common in Canada and also seem to fetch a higher price when they do surface. Then there are those with rare markings. The early M91 variants are also very interesting. Then there are the rifles built in different Soviet satellite nations as well as those refurbed there.
These rifles have been used in every modern conflict around the world since they were first issued in one manner or another. If they weren't used in combat they were used for training purposes. Even the US issued them for combat with the Russian Expeditionary Force and later used them for training. The US Mosins were manufactured by Westinghouse and Remington. One thing I find is that most of the US made rifles I've come across have Finn markings. Some will have finger joints and some won't. The early Finn marked M91s will have very rough SA markings on the chamber area on the left hand side, just above the stock line. I have found a few that people passed over because they didn't look closely enough at the markings on that been there done that looking Mosin.
The relatively cheap rifles available now are very nice. If you're picky and careful you can still find them with matching numbers. It will take some time and sooner rather than later you will need to buy commercial ammo to shoot or start handloading. Milsurp rifles are an investment. I started collecting as many milsurps in excellent condition as I could afford and squirrel away about 50 years ago. I always shake my head at how much these rifles have appreciated in price from when I started. Mind you the "sporterization frenzy" was part of the cause and also, because the rifles were valued at less than the scrap steel value in them many nations just threw them on piles, burned off the wood and sent the metal to the nearest smelter. Many were even dumped at sea. The Mosins on the other hand were often refurbished in make work projects for the plebes and sent away to dry underground storage facilities.
The supply isn't endless. Same goes for the ammo. It will all dry up eventually. Get all of it now, while it's available.
So what if every piece you purchase isn't the most desirable. Desirability is a fickle description at best and is often driven by a movie or television series. Pick out what YOU like and enjoy it. When it's time to move onto to something else, squirrel it away in the safe and keep the ammo. It's always nice to pick through them a couple of times per year, make sure they're clean and just envision what they've been through and where they may have been.
If you're only looking for collectibles that are valuable now, be prepared to spend a lot of money and then, every time you shoot it, you have to wonder how much each shot is really costing you.
Those remaining last few SVT 40 rifles at Lever Arms may be the low dogs on the totem pole right now but that will change very quickly.