looks like that attaches the control lever to the mechanism. If you want to ship it to me I can Reverse Engineer it as well. Ill ship back the parts to you in a couple weeks.
I'm having 25 of the posts made in Aluminum right now and I'm asking around my local buddies to see if anyone has a heater control for sale. (MODERATORS... IM NOT ASKING ANYONE HERE IF THEY HAVE ONE FOR SALE) I may just hit up a local junk yard where several of the era cars are.