A Request For Proposals (RFP) went out yesterday (Thursday) for a $200 million deal that if successful will mark the world's first hybrid tier 1 issue by a non-investment grade rated credit. KEB is just one of many Korean banks contemplating tier 1 issues. Hana, for example, is already said to be tied up with Morgan Stanley and Hanvit, Kookmin and Koram are also said to be keen to follow.