This has been sitting around for nearly 30 years and is still in very good condition.
It came from a 1967 Gretsch Anniversary model that I owned as a boy. I removed it to put a Bigsby on the guitar and then sold it about 15 years ago.
Specs say it's stamped brass but has a shiny chrome finish with no major flaws or pitting.
Should work on any modern Gretsch and still seems to be used on production models today.
Asking $150 plus shipping.