This is were we have the case again were string or lacing cord may have been accidently wound into hanks. The cord is buff finish as opposed to being waxed like regular meccano set cord. It is thicker at 1.2mm and the color is a very lime green,. It matches samples of lacing cord I see in some of my mint sets from the mid 50's. Hank is 4 3/8" long and cord is 169" overall.