(1) Certain other securities are approved for bank investment. There is no dollar limit on a bank's investment in:

(a) general services administration (participation certificates) ;

(b) maritime administration (bonds and notes) ; and

(c) Washington metropolitan area transit authority (bonds) .

(2) A bank's investment is limited to 50% of capital and surplus in:

(a) Asian development bank (bonds and notes) ;

(b) financing corporation (FICO) (bonds) ;

(c) Inter-American development bank (bonds) ;

(d) resolution funding corporation (REFCORP) (bonds) ;

(e) Tennessee valley authority (TVA) (bonds) ; and

(f) world bank (bonds and notes) .