[Your Name] [Your Address] [City, State, Zip Code] [Email Address] [Phone Number] [Date] [Recipient's Name] [Recipient's Address] [City, State, Zip Code] 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], but unfortunately, it lacks the essential signature required for processing. As a result, I am unable to deposit or use the check until it is properly endorsed. To rectify this issue, I kindly request that you provide me with a replacement check with the necessary signature. This will enable me to access the funds allocated to me appropriately and in a timely manner. I understand that errors can occur, but please ensure that the replacement check you provide contains a clear and legible signature. Additionally, I kindly ask that you verify the accuracy of the payee's information and the spelled amount to avoid any further complications. To expedite the resolution of this matter, kindly include a readdressed, postage-paid envelope with the replacement check. This will assist in a swift return of the original check, allowing both parties to avoid any inconvenience. Should you have any questions, require further details, or wish to discuss the matter personally, please do not hesitate to contact me at [phone number] or via email at [email address]. I would appreciate your prompt attention to this issue, as it affects my financial planning and obligations. Lastly, I kindly request that you send the replacement check within [number of days] to avoid any additional delays or inconveniences. I trust that we can promptly resolve this matter to our mutual satisfaction. Thank you for your attention to this issue and your cooperation in resolving it. I look forward to receiving the replacement check with the necessary signature at your earliest convenience. Best regards, [Your Name]