In Mendeleev's 1871 periodic table, copper, silver, and gold are listed twice, once under group VIII (with the iron triad and platinum group metals), and once under group IB.
ɪn mˈɛndɪlˌiːvz wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɛvənti wˈʌn pˌiəɹɪˈɑːdɪk tˈeɪbəl, kˈɑːpɚ, sˈɪlvɚ, ænd ɡˈoʊld ɑːɹ lˈɪstᵻd twˈaɪs, wˈʌns ˌʌndɚ ɡɹˈuːp ɹˌoʊmən ˈeɪt wɪððɪ ˈaɪɚn tɹˈaɪæd ænd plˈætɪnəm ɡɹˈuːp mˈɛɾəlz, ænd wˈʌns ˌʌndɚ ɡɹˈuːp ˌaɪbˈiː.