Three similarly sized carved stones at Palenque are all that remain of an early mosaic relief dating to the long reign of K’inich Janab Pakal (see attached image). The original panel was demolished in ancient times, and all three stones were re-used by the Maya for construction blocks. Two of the carved stones can still be seen in the walls of Temple IV in the North Group (one upside down), and a third was found by archaeologist Alberto Ruz in the masonry of the aqueduct, just to the east of the Palace. The two Temple IV blocks (left and center in the accompanying drawing) have long been seen as probable fits, but I think the third can now be added, giving a hint of a larger figural scene. The image provided, using drawings by Linda Schele, shows the likely arrangement of all three blocks. I’m sure others have noticed this as well.
An inscription ran along the top of the figural scene, broken only by the large feathered headdress of a warrior between the sixth and seventh extant glyphs of the horizontal band. Smaller glyphs look to be name captions for one or two other figures, and two or three small vertical elements may be all that remain of their upright spears (Piedras Negras Panel 2 might offer a vague parallel).
The inscription records a military victory by K’inich Janab Pakal. Unfortunately all that remains of the date — the month position “17 Pop” — is not enough to provide a full reconstruction. The verb is ch’ahkaj, “was conquered,” but the placename for the defeated site, in the third glyph (tz’i?-sa-ti), is difficult to analyze. Interestingly, the text also includes references to two of Pakal’s important “lieutenants,” Aj Sul and Chak Chan.
It’s hard to make out much more from such paltry remains, but I find it extremely interesting that such an early sculpture appears on mosaic blocks — something we never find in Late Classic Palenque art. By the end of Pakal’s reign this mode of presentation for relief carving seems to have given way to the use of large thin slabs of limestone, first used perhaps inside the Temple of the Inscriptions.