Authenticity of Eko Guitars without Serial Numbers? - Facebook

For vintage instruments, serial numbers are often found on the (electric/bolt-on models) or a paper label inside the soundhole (acoustic models).

Most Eko electrics and acoustics (like the Ranger VI) use a bolt-on neck. Generally signify very early production. "Made in Italy" Stamp: Standardized by the late 1960s.

Vintage reissues in 2021 sometimes used retro-style stamps without clear dating.

| Serial Number Range (approx) | Year Estimate | Origin / Notes | | :--- | :--- | :--- | | 1000 – 4900 | 1962 – 1964 | Early Italian production. Very rare. | | 5000 – 9900 | 1965 – 1966 | Peak “Beatlemania” era. | | 10000 – 29999 | 1967 – 1969 | Transition from round to pointed headstocks. | | 30000 – 59999 | 1970 – 1973 | Often “A” prefix or no prefix. | | 60000 – 89999 | 1974 – 1978 | Quality declining. Spanish production begins. | | 90000 – 150000 | 1979 – 1985 | Mostly Spanish-built. Generic designs. |