This ruble or rouble is from St. Petersburg Mint and it has the mint mark in monogram style, apparently there is a lettered version. In this 1997-2001 series only the 2001 coin is rare the rest are considered common although the exact mintage is unknown.
Here are that stats...
Type / Country: 1 Ruble / Russia
Year: 1998-СПМД (St. Petersburg Mint)
Value: $0.25 in Extra-Fine
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