I ordered just a few pairs of OMSA SuperLativa 20, 40, and also Perfetta 70 den. They are seamless! I am giving them a go on eBay and if anything is left, I’ll upload here.
I opened a package and gasped with excitement when I saw that there is no seam on the stomach and on the bum.
20 den and 40 den have small side seams, but 70 den has no seams at all.
My eBay – http://www.ebay.ca/usr/fantasystockings