Frog legs have been on the menu at Nathan’s original Coney Island location since 1958. (Photo: Alex Ellefson / Sheepshead Bites)There are more than a few oddities waiting to be found in Coney Island. Many of them are stubborn holdouts from an earlier era, before national franchises [/ihop-joins-slew-franchises-opening-coney-island-summer/] like