ERA Acoustic Guitar Strings, Martin MP535T

This is a new, unused item in beautiful condition.
It will be shipped via Yu-Packet Post Mini, so there is a possibility of the box being crushed.
We ask for purchases from those who understand this.

The new Martin Era™ strings feature a treated finish (LifeSpan®) to protect against corrosion from hand sweat, silk winding on the ball end to reduce wear on the bridge pin holes, and a flexible core structure for the core wire. This is truly a fusion of LifeSpan® strings, Marquis Silked strings, and Flexible Core strings. Only the Martin Era™ Artist Light, developed in collaboration with Jason Isbell, who released his signature model in 2025, uses traditional SP® core wire. These are 92/8 Phosphor Bronze acoustic guitar strings. The core wire is made of high-quality tin-plated steel, and the winding wire is made of Phosphor Bronze, which has a higher copper content than 80/20 bronze.