November 9, 2015 570 × 380 barterrings Set of two barter rings. Surigao Treasure, Surigao del Sur province. Ca. 10th–13th century. Gold. Bangko Sentral ng Pilipinas, G4P-1982-0001, G4P-1982-0002. Photography by Wig Tysmans, image courtesy of the lender.