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BUENOS AIRES, April 28 (Reuters) - Argentina's central bank bought $630 million of dollars on the local currency market on Tuesday, a source told Reuters, in one of its largest-ever purchases.
Some $500 million of the dollars purchased were proceeds from last week's $1.5 billion auction of bonds by state energy company YPF, the source added. (Reporting by Jorge Otaola and Walter Bianchi; Writing by Sarah Marsh; Editing by Jeffrey Benkoe)