(OTC Markets Group, 21.Jul.2021) — OTC Markets Group Inc. (OTCQX: OTCM), operator of financial markets for 11,000 U.S. and global securities, today announced AbraSilver Resource Corp (TSX-V: ABRA; OTCQX: ABBRF), silver-gold focused advanced-stage exploration company, has qualified to trade on the OTCQX® Best Market. AbraSilver Resource Corp upgraded to OTCQX from […]