Tee- Metalliferous, in New York City (212-944-0909), sells handmade
fine silver chain (cut from a spool). They carry the double and
quadruple (or “two-way” double) in a number of sizes, as well as one
or two other patterns. They sell the chain by weight. The quality
is very good. If you are looking for 22k gold chains (single,
double, quadruple, pinched roman, etc.), please contact me off-list
– I may be able to help you.