This is a solid-wood, all-Brazilian rosewood classical guitar by Teruaki Nakade (1975, C20). Teruaki Nakade trained at the Aguado workshop. (Yuichi Imai's teacher is Teruaki Nakade.) Baden Powell, a master of bossa nova guitar, primarily used Aguado guitars. As a guitar made by a successor to Aguado, it has a sweet and core-filled tone like an Aguado, making it perfect for bossa nova. Here is an audio sample of this guitar: https://youtu.be/Y-4BaE84VzE?si=YIGhPRh2wOlKJqji Aguado is world-renowned for its shellac finish. I believe the finish on this guitar is also shellac, and it is beautifully done. The shellac finishing technique inherited from Aguado may be a major factor in this guitar's excellent sound projection. For reference, here is an audio sample of a 1970s Masaru Kohno Brazilian rosewood guitar: https://youtu.be/eJM-eq24Qfs?si=pwNPcbfDvTFOExEx Personally, I rate Teruaki Nakade's guitar as superior in terms of sound projection, sustain, and bass depth. Although not the same model, there is a comparison video with guitars from world-renowned luthiers (Houser III, Bernabe, Paul Fischer, Teruaki Nakade): https://youtu.be/FW_z_nPBxJw?si=JsSP8VJ1rnpY8Fm0 I think that Nakade guitars are almost on par with the world's finest instruments. In the past, many people believed advertisements in magazines and had a strong longing for overseas guitars, but with the advent of YouTube, more and more people are gradually realizing that domestic guitars are being undervalued. Teruhiko Nakade, Teruaki's younger brother, and Esaki of YAMAHA also apprenticed with Aguado, and I have played their Brazilian rosewood guitars, but I personally feel that Teruaki Nakade's sound quality is the highest level. It is said that Aguado guitars have some issues with intonation accuracy. However, there are some guitars with accurate intonation, and there are rumors that these were made by Nakade during his training at the Aguado workshop. Scale: 656mm Nut width: 52.3mm Frets: Almost 100% remaining String height: 3mm on the 1st string, 3.8mm on the 6th string There are some minor superficial scratches, but there are no cracks, and the neck is straight, in good condition.