Retros are the original Nickel acoustic string all the way from the 1930s. Retro strings offer a uniquely mellow, yet crisp sound that allows your guitar’s natural tonewoods to be heard. They are crafted with Monel, a solid nickel/copper wrap wire – not nickel-plated – meaning there is no chance for defects in the plating to allow for corrosion. Martins proprietary wrap wire is naturally corrosion resistant and it is incredibly strong. Martin also employ’s a sophisticated winding process that controls the coupling between the core and wrap wire to maximize intonation.

• String Gauges: 010 .013 .023 .029 .038 .047
• Martin’s proprietary SOLID Nickel/Copper alloy blend
• Provides for a reduced pick attack allowing the guitar’s tone woods to be heard
• Offers uniquely mellow, yet crisp, sound.

Martin Item No. 41Y19MM10, MM10