Here is a very clean Martin 00-18G, built in 1958.
In the late 1950’s folk music revivals started in many countries. In response to this, instrument companies started making more nylon string instruments, which differ from what we now call ‘classical’ instruments in many ways. They are based on steel-string instruments, are intended to be strummed or plucked, and the neck is narrow enough that you can use your thumb for fretting!
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