Need exterior sliding door handle w center lock

Hi I need a replacement for a broken lock/handle. This is a centered keylock for a mortised style multipoint latch. In the first picture is the broken handle on the left and a replacement handle that doesn't match on the right.  In the second picture are the original interior handles. At one time this was the exterior style too.  This is an active active door as both sliders slide part of a four panel slider set that all slides open fully.  The distance between the screw holes is 3 15/16" on center.  Ideally I would like both exterior handles to match. Last photos are of the latch and catch plates. I am told this was a Pella vinyl slider but can't confirm as no model id is visible. The door is 2" thick.