Hi all...newbie here...bought an upright six months ago. It had been used to play bluegrass I was told. The D and G strings are synth gut and I'm wondering if anyone here recognizes the brand. The seller was not a bass player and hadn't owned the bass for long. I tried to attach a photo but it was not allowed so I need to figure that out too. They are a pale yellow and look like they are wrapped or wound. I love these strings and would like to know what they are. Thanks for any help you can give.