Three Dungkar shankha and a shell, Tibet, 19th-20th century- Dungkar made of a terracotta shell imitating the shape of turbinella pyrum and carved in high relief on the periphery with deities. It is pierced at the tip to allow sounds to be emitted. - Dungkar made of a shell of the turbinella pyrum type, white in nature. It is also pierced at the end. - Dungkar made of a turbinella pyrum type shell whose opening is mounted with a copper plate covered with a silver plate embossed and chased with a dragon in foliage surrounded by a frieze of Greek. The two ends are also mounted in silver with flowers and citipati. - The last piece is a turbo shell decorated with a chased and embossed silver mounting at the ends and fitted with a ring. From 6 to 18 cm