Key legal question
Whether the bank, as pledgee of the mortgage certificate, could denounce the certificate and proceed by real-estate pledge enforcement under the pledge agreement.
Extracted holding
Yes. The contractual clause validly authorized the bank to denounce the pledged certificate and enforce the abstract claim by mortgage-pledge enforcement in its own name.
Extracted reasoning
A pledgee of a mortgage certificate cannot ordinarily exercise the rights incorporated in the certificate absent agreement, but such a contractual authorization is standard, not unusual, and was clear under the trust principle.