Both sculptural fragments were recovered in 1993 by archaeologist Arnoldo Gonzalez, from the National Institute of Anthropology and History (INAH) and were recently incorporated to the Northern Tableau at the Archaeological Site of Palenque, in the Mexican state of Chiapas. Epigraphist Guillermo Bernal Romero has interpreted the secondary text of the tableau, integrated by the pair of fragments salvaged. In a preliminary expression of the glyphs ordered in columns, the date that corresponds to September 9th 687 is mentioned, when Palenque forces broke into the city of Po' (Tonina) "by the work" of its ruler K'inich Kan B'ahlam, firstborn child...