ˈɑːɹɾɪkəl wˈʌnhˈʌndɹɪd fˈɪfti wˈʌn wʌz ˌɔːɾəmˈæɾɪkli ɐplˈɪkəbəl tə ðə sˌoʊkˈɔːld hɪstˈɔːɹɪk nˌæʃənˈælᵻɾiz, wˌɪtʃ hæv pɹˈiːviəsli ɛndʒˈɔɪd ɔːtˈɑːnəmi dˈʊɹɹɪŋ ðə sˈɛkənd spˈænɪʃ ɹᵻpˈʌblɪk, æz ɹᵻflˈɛktᵻd ɪnðə spˈænɪʃ kˌɑːnstɪtˈuːʃən ʌv nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi wˈʌn.
Article 151 was automatically applicable to the so-called historic nationalities, which have previously enjoyed autonomy during the Second Spanish Republic, as reflected in the Spanish Constitution of 1931.