$26.
This is the one I battled with Wurkkos. At the end, it was discovered that light does not work properly if you screw the head in tightly. Loosen it about 1/8" and it works as designed. The copper part is a little oxidized as in the nature of copper over time.
$26 shipped CONUS . Paypal FF, or $27 for Paypal G&S.