This is a 1976 Samoa gold coin with a denomination of 100 Tala. It is uncirculated and has a fineness of 0.917, with an AGW (actual gold weight) of .4584 ozt. The coin was minted to commemorate the United States bicentennial.  On the obverse it features the national arms and the reverse features Paul Revere riding a horse and a map of the United States.  It has been certified by NGC with a grade of PF 69 ULTRA CAMEO and a certification number of 6894001-008, this is also a top pop being only 1 of 7 coins of this type to have been given this grade by NGC, and the coin has a very low mintage of only 2000 pieces being made.  The KM number is KM# 21.