I've just seen an auction on our favourite site of a little Lasisepat bowl that says the label reads
'Taidelasi Sepat Oy Mantsala'
Ivo, I'm not sure if I remembered this right, but I thought I read you had not come across this maker (sorry if I am wrong but there were so many threads and comments and I haven't been back through them all) - I just wondered why this seems to be possibly the same maker but different labels? - if you take the end of the first word Lasi (glass?) and add it to the second (mm not sure what that means) then it makes Lasisepat, which is what is on the label on one of the pieces on this thread.