A birth announcement was, however, published by his parents in 1933, and the baptismal register in Hamburg also lists him as born in that year, showing that he was born on 10 September 1933.
然而，他的父母於1933年發布了一份出生公告，及漢堡的洗禮登記冊也將他列為當年出生，顯示其出生日期為1933年9月10日。