Acoustic guitar string sets from John Pearse and GHS. Both are Phosphor Bronze, Medium gauge. Unopened and unused, stored at home. There may be some aging of the packaging due to storage. I do not recommend these for those seeking items in like-new condition. - Brand: John Pearse - Model: Set #7COM - Material: Phosphor Bronze - Gauge: Medium - Brand: GHS - Model: M 13-56 5355 - Material: Phosphor Bronze - Gauge: Medium Thank you for looking.