This is a 2009 Krewe of Nereus New Orleans Mardi Gras Krewe Favor Pin / Pendant - swirling waves, shells and Nereus logo.
It measures 1 7/8" x 1 3/8".
Designed by India Stewart.
Very good condition.
Please see all photos for details. I have other Mardi Gras items listed; please take a look!