Martin Resources

History, Appraisal & Market Value

Your guide to authenticating, dating, and valuing vintage Martin guitars

Garrett Park Guitars has been a trusted vintage guitar authority since 1991, helping collectors and musicians navigate Martin history and value. This page combines resources on serial numbers, model history, and vintage guitar values for iconic Martins like the D‑18 and D‑28.

Explore Martin Models & Value Guides

Martin D‑18

One of Martin’s classic dreadnoughts, traditionally built with all‑mahogany sides and a spruce top. Celebrated for its warm, rich tone and historical significance.

• History & Features
• Pre‑War (1930s–1940s) Value Guide
• Post-War (1950s–1960s) Value Guide

Martin D‑28

First introduced in 1931, the D‑28 is Martin’s iconic dreadnought — known for its powerful projection, rich harmonic character, and deep history in acoustic music. Pre-war models with herringbone trim are particularly prized.

• History & Features
• Pre‑War (1930s–1940s) Value Guide
• Post-War (1940s–1960s) Value Guide

Martin Serial Numbers

Martin serial numbers help you authenticate and date your instrument. Their placement and format vary by model and era.

• Standard dreadnoughts (D‑series): inside the soundhole, on the label
• Smaller bodied or specialty models: inside the body or on labels
• Older pre-war Martins: often numbered in long sequential serial‑number runs.

Learn more about Martin Serial Numbers.

Pre‑War vs Post‑War Guitars

Understanding Martin’s production eras is essential for valuing, collecting, or buying vintage instruments. Here’s a snapshot of the most significant periods:

• Pre‑War (1930–1942): High craftsmanship, traditional hide-glue construction, Brazilian rosewood, scalloped bracing — these years produced some of the most collectible Martins. Learn more about Martin's Golden Age.
• Post‑War (1945–1969): Materials and specs evolved — for example, Martin moved toward Sitka spruce tops and changes in bracing and trim. 
• Modern & Reissue Era: Includes “Authentic” series recreating vintage specs, as well as standard-production models that reflect updated manufacturing methods. 

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