Hello,
I believe that these are supposed to be Swedish tinnies. I have a few of these, one just like the one you show and while originals do exist, I believe both yours and mine are considered fakes. I don't remember exactly why these are considered bogus but if memory serves me correct it has to do with the attachment pin (plate),on the reverse. My memory's not what it used to be so I hope others add whatever info they may have.
regards,
Duzig(Bill)