The image is a photograph of a wooden sign that reads "Riddle Windmills were manufactured at Yorktown from 18-80 on Yorke Peninsula South Australia". The sign is rectangular in shape and has a white background with black text. The text is written in a cursive font and is centered on the sign. Below the text, there is a blue outline of the Yorkshire Peninsula in the shape of a map. The sign appears to be placed on a white surface, possibly a table or countertop.