Ethiopia. Proof Set of 10 and 25 Birr 1977, World Wildlife Conservation, Bearded Vulture (Silver 38,61 mm, weight 25,31 g. .925) and Mountain Nyala Goat (Silver 42 mm, weight 35 g. .925), KM 61, 62, National Bank of Ethiopia, Condition Proof, original box and certificates, slight tarnish - patina, photo taken through the plastic in the cap