Interesting suggestion (too bad no pic) from link.rbbm.This UID is on the opposite coast, but several of the details match. Never know what to do when that happens? The National Missing and Unidentified Persons System (NamUs)
Ws thread..
NY - NY - Suffolk Co, WhtFem UP11774, 15-23, in shallow grave, ring written D.E.C, Apr'78
Found by man walking on beach in a shallow grave
Long Light brown hair
-Late Teen/Young Adult (Years)18-22
-Estimated PMI3 Years
-Height 5' 3"(63 inches) , Estimated''
-Fingernails (3) with reddish purple material
-ME/C Case Number 1978-0792
-Body Found April 2, 1978
-Location East Islip, New York
-Shoe; clog style, right, womans: measuring: 11" in length (top) and 10.5" (bottom) by 3.5" in broadest width (bottom) by 4.5" (top); brown leathery belt.''