I only have 2 of these - only ever found 2 of these while buying literally tons of jewelry from 1993-2006 in Pakistan at the amazing Afghan markets. both are almost identical - both have some corrosion but I do not want to remove as it tends to change the piece and I would then be compromising the authenticate nature. I think these are probably museum pieces . This is how I bought them decades ago. i even have them on my ancient neck-( not a pretty sight) they are 14 - 15 inches on the neck so t