No marking
Thanks for posting! I am confident that we can supply you with the awning operator you are searching for. I'll need to see a photo of the internal arm and how it attaches to the window to narrow the the recommendations. It's also best to have the operator removed from the window to confirm any measurements.
Thanks for posting! Your awning operator resembles our 39-025 and the opposite handed version, part 39-026. Look over the dimensions and compare them to your existing operator to determine if this is the correct replacement. You'll need to disconnect the arm from the window to compare the other measurements and the design of your link arm.