NEW YORK, Dec. 21, 2012 /PRNewswire/ -- OTC Markets Group Inc. (OTCQX: OTCM), operator of Open, Transparent and Connected financial marketplaces, today announced that South American Silver Corp. (OTCQX: SOHAF; TSX: SAC), a Vancouver-based mineral exploration company, has chosen to trade on OTCQX®, the qualified OTC marketplace with the
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