Bay Sema from the middle Ayutthaya period are “closely tied” in the “hip” and carry a “Brust-Platte”. In the late Ayutthaya period “eyes” developed (fig. 4), in the long run “were crowned” it even (fig. 2), which continued into the Rattanakosin period. Under king Mongkut (Rama IV.) the Thammayut medal was created; the Thammayut monks developed a three-dimensional (quadripartite) from the flat Blatt-Form, rather würfelförmigen stone (fig. 3).