In answer to your question, the Spanish Revolution lasted from 1936-1939.
It doesn't seem to have been a stable working system, though.
Again you seem to be drawing rather shortsighted conclusions. It may have been brief but only because it was under heavy siege by multiple forces (i.e. fascism, bolshevism, the Spanish Republic, separatists and the liberal democracies) and yet despite that it did thrive:
"The success of collectivization of industry and commerce impressed even highly unsympathetic observers such as (The Spanish Cockpit author Franz) Borkenau." Noam Chomsky - Objectivity and Liberal Scholarship (from Chomsky on Anarchism)
"The collective expanded normally. There was never any shortage of food, clothing, footwear-in short, life's essentials were in ample supply." The CNT in the Spanish Revolution by Jose Peirats
"There was no unemployment, and the price of living was still extremely low; you saw very few conspicuously destitute people, and no beggars except the gypsies. Above all thre was a belief in the revolution and the future, a feeling of having suddenly emerge into an era of equality and freedom. Human beings were trying to behave as human beings and not as cogs in the capitalist machine." George Orwell - Homage to Catalonia
It must've been pretty durable to achieve all that while being under constant siege from without and within.
But then the reason I pointed out the Argentinean example was because the same social transformation occured during the past decade, but mercifully without the bloodshed of a civil war. And you know what? More than a decade later this social transformation is still happening. In fact, in 2011 the Argentinean workers won a new law that allows workers to take over their places of employment during economic break downs.
"The movement led in 2011 to a new bankruptcy law that facilitates take over by the workers."
Then there's the moneyless barter networks seen in the documentary "Argentina: Surviving without money." The video mentions that nearly 100k Argentineans participated in these moneyless Barter/Exchange networks and that these moneyless networks were so successful that there was hope of copying them in other South American nations.