By Aimee Donnellan
LONDON, Sept 10 (IFR) - HSBC is set to price US$3.75bn worthof contingent convertible bonds through a dual-tranche offeringon Wednesday, according to a market source.Europe's largest bank by assets is selling a US$1.5bn perpetualbond that is callable after five years at 5.625%, and aUS$2.25bn perpetual callable after 10 years at 6.375%. (Reporting by Aimee Donnellan; editing by Alex Chambers)