This set of claves was made by an unknown maker, provenance unknown, 1970s. They are made of wood with metal ends, the wood is ribbed near the ends. Previously used by Afro-Latin jazz percussionist Ramon "Mongo" Santamaría.
Ramón "Mongo" Santamaría Rodríguez (1917–2003) was a Cuban percussionist and bandleader who spent most of his career in the United States. Primarily a conga drummer, Santamaría was a leading figure in the pachanga and boogaloo dance crazes of the 1960s. From the 1970s, he recorded mainly salsa and Latin jazz, before retiring in the late 1990s. Santamaria made several recordings as a leader of his own group, as well as a sideman with Fania All-Stars, Tito Puente, Dizzy Gillespie, and Ray Charles.