My wife has a guitar with this info on the label inside the soundbox:

Giannini Guitars
"A masterpiece in sound"
Model No. 2
Serial Number: 24921
8/66
Tranquillo Giannini S.A.
AL OLGA 414 S. Paolo Brazil
Made in Brazil Founded in 1900

From the very limited things I can do on a guitar it seems to play well enough.

Anyone ever heard of these?