ˈɑːpənhˌaɪm ɹᵻsˈiːvd ɐ sˈɛkənd dˈɑːktɚɹˌeɪt, ɐ dˌiːˌɛssˈiː, fɹʌmðə jˌuːnɪvˈɜːsᵻɾi ʌv ˈɑːksfɚd ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti fˈoːɹ fɔːɹ hɪz ˌækədˈɛmɪk wˈɜːk lˈeɪɾɚɹ ɪn hɪz kɚɹˈɪɹ.
Oppenheim received a second doctorate, a DSc, from the University of Oxford in 1954 for his academic work later in his career.