Chen-Ning Franklin Yang Autograph Erna Sack shows Franz Beckenbauer and Georg

shows Franz Beckenbauer and  Georg `Katsche` Schwarzenbeck as footballers (German National Team jersey)

Autograph subscription signed

shows Didier Queloz in a close-up portrait

shows Cecil Frank Powell in a chest-up portrait

Signed card - with typed description (in German - covered by the passepartout)

Chen-Ning Franklin Yang Autograph Erna Sack shows Franz Beckenbauer and GeorgPrinted scientific article signed, three pages, 8 x 10,5 inch, scientific article entitled `Condition of Self Duality for SU(2) Gauge Fields on Euclidean Four Dimensional Space` by C. N. Yang reprint from `Physical Review Letters` (Vol. 38, 13 June 1977, No. 24), signed and inscribed on the front page in black felt tip "from the author C. N. Y.", with very mild signs of wear in nearly very fine condition.