John Pearse 700M Phosphor Bronze Acoustic Guitar Strings (Medium) Leave a Comment / Uncategorized / By Denise / September 13, 2017 90 GEARANK 90 out of 100. Incorporating 200+ ratings and reviews. Street Price: $11.67 Manufacturer: John Pearse Features Six String – Phosphor Bronze Wound Gauge: .013, .017, .026, .035, .045, .056