Eko’s numbering systems vary significantly depending on the era: Modern Eko Guitars (Post-2000s)
J-prefixes often appeared in the late 1960s. After 1973, rosettes (the decoration around the soundhole) generally became simpler. eko guitar serial number lookup 2021
Recent models, such as the NXT Series, use a more transparent dating system within the serial number: Many early 1960s models lacked serial numbers entirely
Look for numbers stamped or printed on the rear of the headstock. such as the NXT Series
Many early 1960s models lacked serial numbers entirely. You can identify these by their sepia-toned internal labels or more elaborate rosettes.
For electric models, you can date the instrument by checking the codes on the internal potentiometers (volume/tone knobs). The digits usually follow a "Manufacturer-Year-Week" format (e.g., "1377012" would be the 12th week of 1970). Summary of Historical Eras Eko Guitars NXT A100ce Natural Acoustic Guitar
Some bass models may have numbers located under the intonation screws on the bridge. Decoding Eko Serial Numbers