This is a vintage and David Yurman four strand box chain necklace in very good to excellent pre-owned condition.
The width of each chain is 1 mm (4 mm total). The four chains measure 15.5 inches long using a dressmakers tape.
You can wear this alone or attach a DY enhancer pendant (see last photo). Only the chain is for sale.
The necklace has a lobster clasp and is faintly marked 925 on the hook part of the closure.
The hang tag is marked DY on one side. A triangle, 925 and 750 (18K) on the other side.
All my David Yurman items are authentic and are checked at the David Yurman boutique located in Scottsdale, AZ.