Watch List notes:

PAPUA NEW GUINEA: Tanga Islands, grooved shell ring (89.16g), Opitz p.302, 82 x 29mm, known as am fat in the Tanga language, made from the valve of a large tridacna shell, with several grooves carved into the shell wall, considered the major shell wealth on the islands, EF, ex Charles Opitz Collection. A single am fat requires about six months of polishing, during which the patron must supply food daily to the maker and give him a pig at a feast upon completion.

Estimate: 150-200 USD