Hey Dennis. I'm afraid I can't associate those codes with anything in our database. If this is an Andersen window, we need the stamps on the metal balance box itself. It's best to remove the sash balance from the window to obtain photos of all the stamps--often how the stamps are posted are big a clue as to what the numbers themselves state. See the guide I've listed on this page for more information about Andersen balances. We'll do our best to assist you from there.
Sounds like a plan, Dennis. We'll be here to help whenever you can get that data for us.
Anytime! Please feel free to reach out if you had any other questions and we would be happy to assist.