Martin M1400 Marquis Silk and Steel Custom Acoustic Guitar Strings (Discontinued) Leave a Comment / Uncategorized / By Denise / September 13, 2017 89 GEARANK 89 out of 100. Incorporating 200+ ratings and reviews. Street Price: $5.89 Manufacturer: Martin Features Set: M1400 Gauge: Silk & Steel 11.5-14-23-28-38-47 Tension: 122.2 Package: 6 strings
