Dear [Recipient's Name], I hope this letter finds you well. I am writing to bring to your attention an issue concerning a check that was recently received from your organization. Upon careful examination, it has come to our notice that the said check is missing a vital element — a signature. As you are aware, a signature acts as a verification tool, confirming the authenticity of the check and ensuring that it has been authorized by the issuer. In its absence, however, the check remains incomplete and cannot be processed by our banking institution. To rectify this matter, we kindly request your cooperation in providing us with a replacement check, duly signed, as soon as possible. The replacement check should be made payable to [Payee's Name] and include the correct amount of [Check Amount] dollars. It is crucial to address this issue promptly to avoid any delays or inconveniences both for our organization and yours. As per our records, the original check was sent on [Date] and was intended for [Reason/Purpose]. We kindly ask you to include this information in the replacement check to ensure proper reconciliation of accounts. We understand that mistakes can happen, and we appreciate your immediate attention to this matter. Please send the replacement check to the following address: [Your Organization's Name] [Your Organization's Address] [City, State, ZIP] [Contact Person's Name] [Contact Person's Title/Department] [Contact Person's Phone Number] [Contact Person's Email] If you have any questions or require further clarification, please do not hesitate to reach out to us. We value our working relationship and are committed to resolving this matter swiftly and amicably. Thank you in advance for your prompt assistance in resolving this situation. We look forward to receiving the replacement check with the necessary signature at the earliest convenience. Sincerely, [Your Name] [Your Title/Organization Name] [Your Contact Information: Phone Number, Email]