Russia's foreign currency and gold reserves have hit a new post-Soviet high of $29.5 billion after rising almost one billion dollars in the week to Feb. 2, the central bank said on Feb. 8, 2001. The bank said reserves had risen to the new level from $28.6 billion registered on Jan. 26. The bank has been buying up hard currency revenues from oil firms, themselves cashing in on high world prices for their product. Reserves have now more than doubled since Jan. 7, 2000 when they stood at $12.3