off,but..
In the great Soviet Union there was not one, not two, not three, but about 4 different exchange rates for the ruble...
There was the "official"... This actually meant nothing, but it fanned national pride. It was between 0.9 and 0.58 between 1971-88 (when I was first out in 1976, for example, it was 0.76 roubles to the dollar). Nobody got dollars for that much, but inexperienced tourists could get that much for their dollars...
At that time, dollars went for 4-5 rubles on the black market.
There was also the "commercial" exchange rate: that was what you had to pay for a dollar in commercial terms (it was about 1.8-2 rubles).
And then there was the tourist rate (I suppose if you somehow got abroad, you could get it for up to a certain maximum amount).
Around the crash (1990-92), the ruble was at its "strongest" (officially): 0.55 ruble/USD. But by then the black market exchange rate was already 40 rubles/USD, and the tourist rate was 28..
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