A medallion signature guarantee must be completed in person because it confirms your identity, signature and legal authority to transfer securities. How to fill out the Bank Letter of Guarantee Template?The collection instruction must indicate that the collection is subject to URC 522 and give complete and precise instructions. We make it easy to get a contract performance bond. Just click here to get our Nevada Performance Application. This online complaint form will be utilized for investigatory purposes so it is important to fill out each field and provide as much information as possible. A bank typically issues a letter of guarantee to inform someone else that the bank guarantees funds or securities for the client. This gives a fallback recovery option in the case of default, shielding banks from some of the risk of lending. Banks are often quick to call such guarantees. Fraudsters use a fake bank guarantee to create the illusion that safety is in place.