Replying to my own topic here! It just happened again. This time with Monaco Scott # 789. I'm assuming this means the stamp has never been entered into the database? There was no photo of this stamp. It can be found on the following website, http://www.stampworld.com/en/stamps/Monaco/Postage%20stamps?type=QO&view= however, this site shows it with a number 1025 (don't know if they are using Scott).