Recently I contacted the bole tannery in Sweden to inquire about some of their leather, they make vegetable tanned cow leather and reindeer skins as well and were purveyors to the royal court in Sweden. They have a very old tannery that uses spruce bark to tan their leather with the tanning liquids apparently being unchanged since 1918.
Unfortunately the owner Jan who is their 3rd generation bark tanner, got back to me with saying that they have unfortunately have stopped their tanning operations and will likely not tan any more leather. Their in house craftsman has also retired so they are selling of their hardware now.
He sent me a catalog with all their bag and smaller item hardware that they are currently selling off, so if you are interested in helping these guys out a little by taking a look at their stock please shoot me an email at email@example.com and I will send you the catalogs that he sent me.
Just a few examples of items he has: Doctor bag frames, buckles, straps, zips, locks, purse frames and many other smaller stuff.
Most of the hardware comes from the following places:
Italy (Alce, Castiglioni, other), Germany (F.a Neeb&Kühn very high quality, no longer available), Sweden (Forsheda)
Sweden (Forsheda, roller buckles, D-rings), England ( mostly brass items, traditional, horse gear), USA, Australia (stirrup buckles), USA, Australia (stirrup buckles)
It's a shame that this tannery is going out of business because they were making really interesting leather with a interesting history, check out their website to read all out their work. It's pretty interesting :)