They had oil and diamonds. I don't think lack of foreign currency in those amounts ever really limited what Soviet intelligence could do.
What has always amazed me is how trivially cheaply most treason is paid for; it's almost always ego driven or blackmail driven, not outright "cash for secrets".
See "The Psychology of Espionage and Leaking in the Digital Age" [0] from the CIA for more on this. From the paper:
> What Causes Someone to Spy or Leak?
> "Crises and vulnerability together intensify emotions, undermine already compromised judgment, and galvanize impulses to seize opportunities to obtain escape or relief through ill-judged negative conduct. People in this state are ready targets for manipulation and recruitment for espionage. They are also primed for behavior such as leaking, if they believe it will bring them respite and reward."
It wasn't even enough money for him to pay off his debts. I can't imagine my selling out my country, and still owing money. You're not really in a better position than when you started.
And titanium, lots of which they inadvertently sold to CIA front-companies for use on the A-12 / SR-71.
When NASA started to scrap a warehouseful of 71 spares, that included many tons of Soviet titanium bar stock which the Air Force whisked off to Tinker AFB for future use.
What has always amazed me is how trivially cheaply most treason is paid for; it's almost always ego driven or blackmail driven, not outright "cash for secrets".