These are from Sweden & the blue & silver foil label (if still on the piece) simply reads "handcrafted in Sweden". Orrefors did make a very similar piece, but theirs is always signed. These particular ones came in four sizes measured by the top diameter, 3 1/2 to 7 1/2" & came in crystal & blue. My DW uses them as nut dishes. I can take a pic of both a crystal one & a blue one if necessary, but these are not uncommon in the U.S. except for the large 7 1/2" size. Ken
Edited: I've got to run, but I took a couple of hurried photos (sorry if they are not the best) & before anyone asks the bottom looks exactly like the bottom of the OP's.