Vintage 14k Gold Tie Clip Chain & Initials “CPW”

I don’t know anything about this. Purchased at an antique store. Marked 14k. It’s yellow gold. Makers mark two J’s back to back. This has been used and could use a polish and shine. See pictures for estimate of size. Please zoom into pictures to assess condition for yourself. No returns. There is no writing on the back of engraved plaque. Approx 5.7 grams.