got two chips last night from the caribe hilton, san juan and i know nothing about puerto rican chips. $1 plain mold, grey, 3 tan inserts, white inlay with red and black lettering-caribe hilton hotel $1 san juan puerto rico, same both sides. $5 caribe hilton, large greek key mold, dark brown, 3 black inserts, white inlay, black, red and blue lettering. was told they were late 60's or early 70's. any help with value and age would be appreciated. thanks, doug.