When I was a child, my grandfather bought me a Sigma Martin Classical Guitar made of Rosewood and with ornately carved tuning pegs that looked like mother of pearl. It had to have been one of the first models, as my grandfather died in 1970.

In a misguided effort to simplify my life about ten years ago, I gave it away to a friend's son, but now that my own son is studying guitar, I wish I had it again. Is there any way for me to identify what model it was, find a similar vintage model, and figure out how much to spend???

Thanks,
Emily