Papua New Guinea, Three 1970s Proof Sets with Silver

To include: 1975 eight-coin set presented in an album of First Day postal cachets; 1977 eight-coin proof set in box; 1978 eight-coin proof set in box. Note: In all sets the 10 kina coin is sterling silver and the 5 kina coin is .500 fine silver.

From the Estate of the late Jacqueline C. Harris, Durham, North Carolina