Vintage 14K Long Long Necklace Stamped shops JWD

Product Name: Vintage 14K Long Long Necklace Stamped shops JWD
This is a Vintage 14KT Gold Necklace stamped JWD. JWD are the initials of the maker. James Dixon & Sons (Sheffield Manufacturers, UK) ca 1880s-1940s. This was given to me my older relative years ago. I used it several times and now, I'am ready to sell it. This necklace is over 80 years old(antique almost). Thin necklace 14KT Gold (Real) Stamped JWD Closure see pics above. I don't know how to describe this closure . I think it's lobster closure but not sure Measurements: see pics above Selling as is because I'am not sure how to clean thin jewelries like this. Pre Owned shops Good Condition.