The strings are old. The sound is rich and mature. The sweet, warm, and melodic sound is wonderful. This is a reference sound source, though I apologize for any inconvenience. https://youtu.be/jtE7mHIBGvo String height at the 12th fret, 6th string side: approximately 4mm There's still some saddle remaining, but the tension at this string height is the sound of this guitar, so I think it's better not to lower it. Scale length: 658mm, Nut width: 51mm The back plate might be quartered-sawn Brazilian rosewood. Numerous scratches not visible in the photos. Estimated from the label: December 1974, approximately 51 years ago. A removable golpeador (tap plate) is included, so you can also play flamenco pieces. The area where the right arm rests has some discoloration, so an armrest is attached with double-sided tape. This allows for casual playing in short sleeves. The discoloration might be due to shellac. A famous luthier has a Santos Hernandez model, but perhaps Sobrinos de Santos Hernandez is the closest to the sound of Santos Hernandez? Santos Hernandez was a secretive man and did not share his knowledge of flamenco and classical guitar making with his apprentices. His wife, though not a guitar maker, learned much of the theory from her husband. After Santos Hernandez's death, she briefly employed Marcelo Barbero to finish the guitars her husband had left unfinished. Eventually, she hired her nephew, Feliciano Bayon (1922-1997), and continued to make guitars under the name Vda. de Santos Hernandez. After Matilde's death in 1955, Feliciano Bayon (1922-1997) took over his uncle's workshop. He began making guitars under the name Sobrinos de Santos Hernandez. Surrounded by his uncle's guitars, using his uncle's workbench, molds, and tools, he produces very authentic Santos Hernandez models. Feliciano Bayon was self-taught in guitar making. He became a great luthier not only by studying the classical and flamenco guitars left by his uncle but also by carefully and logically observing the many masterpieces brought in for repair, guitars by famous luthiers such as Antonio de Torres, Enrique Garcia, and Hermann Hauser.