This was given to a friend of ours by a stranger. Nothing is known about the set. It is not in great condition but could probably be cleaned up to look really nice. The 3 symbols on the bottom are as follows:
the first picture looks to be a hedgehog or some kind of animal with its tongue sticking out. there are 4 circles on the bottom.
the second looks to be the letter C (capital) but it is not a solid C. It has the shape of a crescent moon, but extended to the shape of a C.
the third appears to be dragon, with 3 elongated scales on its back and 3 lines on top of its head
all three pictures are boxed in, but the corners are cut off in diagonals. all 3 boxes are conjoined. (the right side of box 1 is also the left side of box 2 and the right side of box 2 is the left side of box 3.)
the numbers on the bottom are 3150.
The pictures and numbers are not stamped on but they are not etched or engraved very deep. There are no other distinguishing marks.