I'm hoping that you can tell me which one of your Anderson operators handles mechanisms work. On the longer of two arms it has the number 59 stamped on it if that's any help.
Tom from SWISCO responded:
June 21, 2017
I believe we may have the replacement parts you are looking for. Please take a look at our 39-147 Andersen window crank and our 39-286 crank handle. Take a look and let us know what you think.