[Your Name] [Your Address] [City, State, ZIP] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Address] [City, State, ZIP] Subject: Return of Check — Missing Signature Dear [Recipient's Name], I hope this letter finds you well. I am writing to inform you that I recently received a check from your organization, dated [Date of Check], in the amount of [Check Amount]. However, upon careful inspection, I noticed that the check is missing a crucial component — a valid signature. The absence of a proper signature raises concerns about the authenticity of the check and renders it unusable. As such, I kindly request that you reissue a new check with the necessary signature to avoid any further complications. To expedite the process of rectifying this issue, I have enclosed the original check. I would greatly appreciate it if you could promptly return the replacement check with the correct signature to the address mentioned above. I urge you to thoroughly review the enclosed check to ensure its accurate completion and signing. In case there was an oversight or error during the preparation of the check, I kindly request that you review your records and take necessary measures to avoid similar occurrences in the future. This will help maintain your organization's reputation for professionalism and accuracy. Should you have any questions or require any additional information regarding this matter, please feel free to contact me at [Your Phone Number] or via email at [Your Email Address]. I am available to assist you and resolve this matter amicably. Thank you for your understanding and prompt attention to this issue. I trust that you will handle this matter with utmost urgency and professionalism. I look forward to receiving the replacement check with the required signature at the earliest opportunity. Yours sincerely, [Your Name]