Hi Ellen... "José and Son must have been prominent guitar builders in Arequipa, Peru, sometime in the 1950's or 1960's."
I don't know about the label though... if it was built in the '40s then this info might not fit
This is all I could find out but you probably have this info... if not it might be a lead for you
Other members might know more though so stick around
Welcome to the forum btw
Never, ever give up!... I leave my songprint on your heart.