Pella window crank

I believe that our windows are Pella casements from the 1970's, and we need a new crank for one of them. The part that attaches to the sill appears to be identical in size and appearance to the 39-097, but the rest of it is different. I have attached an image that clearly shows the part that is different. (Unfortunately, because I scanned the part, I was unable to get a clear picture of the startionary portion. However, it is 3-13/15" from hole to hole). The lateral bar is 5-5/8", just like the 39-097, but the upper portion of the the crank is 6-1/4" long with 2 of the 3 oval holes spaced 1-1/2" apart and the outside 2 holes spaced 5-1/2" apart. Do you know if Pella has a part to replace this?

You are absolutely right--the 39-176 is the one we need since the photo I uploaded is reversed. I will talk to our handyman to make sure and then order it. Thank you for your prompt reply!