1977-80 Greenland Art Pack

Greenland 'Art on Stamps' Pack contains the following 4 stamps:
1977 9 Kr Eskimo Mask - S.G. No. 96
1978 6 Kr Tupilak (imaginary animal) - S.G. No. 107
1979 7 Kr Soapstone Figure - S.G. No. 108
1980 8 Kr "Eskimo Family" - S.G. No. 109
all stamps are unmounted mint (U/M). Pack also contains explanatory leaflets in several languages. All four stamps were engraved by Czeslaw Slania.