The windows were installed in 1997. There are not any numbers or markings on the lock. I ordered at one time part number H4082 from CR Laurence Company (if that is any help) which is the connecting arm (if that helps).
Paul from SWISCO responded:
July 15, 2019
Thank you for reaching out to us. Could our 38-095 multi-point lock work in place of your current lock? Look it over and see what you think.