Madhavananda das : We were in Prabhupada's room in Calcutta, and Nanda Kumar brought in a letter for him to sign. Prabhupada looked at the letter, two-page letter, looked it over and then grabbed the pen and goes "A" and then "C" and then this big "Bhaktivedanta" and then big capital "Swami."
There was a Life Member there and I was there looking at this, and we looked at each other when we saw the signature. And Prabhupada noticed it and he looked at the Life Member and he said, "Yes. When I was at Scottish Church's College in Calcutta, my professor witnessed my signature also and he said, 'Ah that is a royal signature.'"