From the later 30s-40s, this is a STERLING 3" Retro pin that has a Rose Gold wash.  The round piece on the left is 3/4" and meant to hold a watch.  This is from a warehouse find and has never been worn.   It has some surface pitting, which I am sure will polish out.  Very minor - but wanted to let you know.  A great old find!  $35.00