[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 in good health. I am writing regarding a check that was recently issued to [Payee Name] and sent to you for processing. However, upon reviewing the check, I noticed that it was missing my signature, rendering it invalid for deposit or cashing. I understand that such mistakes can occur and would appreciate your assistance in resolving this matter swiftly. Enclosed with this letter, please find the original check [Check Number] dated [Date] in the amount of [Check Amount]. I kindly request that you cancel the original check due to the missing signature and reissue a new check with the required signature. To process the new check accurately, please ensure that all the original payment details are duplicated, including the correct payee name, payment amount, and any additional information provided on the original check. The new check should be made payable to [Payee Name], and I request it to be sent to my provided address at [Your Address] as soon as practical. In order to avoid any further inconveniences, I would appreciate if you could confirm receipt of this letter and acknowledge the issuance of a new check within [mention a reasonable timeframe, like 10 business days]. Should you require any additional information or documentation from my end, please do not hesitate to contact me at [Your Phone Number] or [Your Email Address]. I would like to express my gratitude for your prompt attention to this matter. You're understanding and cooperation are greatly appreciated. I trust that you will handle this situation with utmost professionalism, ensuring a timely resolution. Thank you for your prompt action. I look forward to receiving the new check soon. Sincerely, [Your Name]