This amulet resembles a heart or lungs supporting a wind-pipe with an upper crossbar. The sma hieroglyph means unification, and the amulet was believed to provide the wearer with an unified body in the Other World1. Such amulets are mainly in dark materials and from Dynasty 26 onwards1,2
References
1Andrews C. Amulets of Ancient Egypt, 1994, p. 85 and Fig. 64b
2Petrie W M F. Amulets, 1914, pp. 11-12 and Figs. 17a-e




