Found Medallion near Carlsbad Beach, Carlsbad, California, United States

Found a dog-tag style medallion at Carlsbad beach with a metal detector. The front side features a black background with silver text that reads 'TO MY Grandson' followed by a message beginning with 'I CAN'T PROMISE I'LL BE HERE FOR THE REST OF YOUR LIFE'. The back side reads OVZ 18th with a date, and GRANNY.