Manuel Gonzalez Contreras is a luthier who established his own workshop after three years of training at the Jose Ramirez workshop. This Blanca guitar is about 30 years old, but it is overall very clean. There are no noticeable scratches, only a few on the lower binding. The neck is generally straight. The string height is 2.7mm at the 12th fret for the 1st and 6th strings, and has been adjusted to a comfortable height. The sound has a powerful low end with light and beautiful mid-high tones, and the rasgueado is especially excellent.