RUSSIA: 1 Rouble (1984 / Restrike of 1988) in copper-nickel commemorating the 150th Anniversary birth of Dmitri Ivanovich Mendeleyev with national Arms divide CCCP. Head of Mendeleyev facing on reverse. Inside slab by PCGS "PR 69 DCAM / Mendeleyev / 1988 Restrike". Cert number: 41810027. (Y# 194.2).