Today in the mail arrived a present from Mr. Herbert Halsegger. It is an original participation certificate from the 1976 Haifa Olympiad! We thank Mr. Halsegger for this gift, indeed, and will update with more information about Ms. Wagner when available.
Edited to add: well, the first update, form more material Mr. Halsegger sent us, is that it is Ms. Wagner and not, as we assumed, Mr. Wagner. She also had gotten a certificate for making a pilgrimage to Jerusalem at the same time.