Found this place while Googling for info on what I found...
Seems that I have six stripper clips, might be from WW2, or at least from the 50s. Stamped G.W.S. at the back, so probably Finnish? Four are just about mint, the fifth is a bit corroded and the last one is not good at all. The cartridges are going to the police since I do not have a license for any firearm stuff, but I suppose I can keep the clips. If anyone is interested, here are some probably original clips. Photos available on request.
I'm not sure how you people do these things, but I suppose that it would be possible to just pop these in an envelope and mail them to anywhere?