Hi string gurus. Can anyone identify these strings? I read through a bunch of silk color threads but didn’t find a match. They are roundwound, roughly 45-105, have grey silk wrap on the post end (see pic) , no silk on ball end, and a tarnished looking silver ball (all strings same color) on ball end. No idea how old they are (came on a recently acquired used bass) but they feel great and I love the tone I’m getting. Want to try a new set of these on this bass before I go back to my old standards.