Compare another example dated to the 17th century, in the James and Marilynn Alsdorf Collection, cf. P. Pal, A Collecting Odyssey, 1997, cat. no. 312; and P. Pal, Tibet, Tradition and Change, 1997, cat. no. 85, dated from the 16th-20th century, indicating that individual parts were replaced over time. Aprons of this type would have been worn by officiants for certain Tantric ceremonies, and in its standard design generally includes seven large pointed-elliptical bone plaques at the waist band.