Sun finds Charlie's 'DS' ring in Aaron's cradle

As Sun is walking through the beach camp, she notices the cradle that Claire kept Aaron in and walked over to it. She sets in upright and notices something in the blankets. She pulls out Charlie's DS (Dexter Straton/Drive Shaft) ring that Charlie left in the cradle before he sacrificed himself at the Looking Glass station. It's taken two seasons for someone to find that ring. Does it signify something to come in season 6?

The Drive Shaft/Dexter Straton ring

It is revealed that Drive Shaft is named after Dexter Straton. The ring bears his intitals and is a family heirlom. In the first picture Liam is giving Charlie the ring and in the second is the shot of it in Aaron's carriage, where Charlie left it because he is supposed to die.