This coin commemorates the 5th Anniversary of Marcos’ New Society.  The reverse features the conjoined busts of Ferdinand and Imelda Marcos.  Marcos was a US supported strong man/dictator that was eventually toppled by People Power, a term first popularized by the uprisings of 1983-1986. A bit of an oddity this one, for some reason even after Marco’s overthrow this coin is still incredibly popular in the Philippines.  Again, something I picked up because the price was right.  Quite a heavy coin too!