I have some old (ca. 1980) strings that appear to be flatwounds. They were sold to me as "Generic"; the shop (old Ax In Hand, Normal IL, later "Guitar World", IMS) couldn't or wouldn't tell me who the actual mfg was. Photo of packaging: https://www.flickr.com/photos/31368187@N03/13038524023/ Ideal (for me), if not the longest-lasting string I ever used. Almost out (one last nicely aged new set left!) Any info available? Thanks!