I have found in you listing a part that most resembles my part, it is your Catalogue number 26-110 and 26-111. While these parts look a lot like mine there are many differences when i compare the dimensions. Also note that on my pictures, there is a small rectangular hole for the thumb latch, directly behind a the slot in the latch itself. That is crucial, as the slot in the top of upper frame piece has to line up with this to allow the thumb latch to attach to the latch..
ref. dimensions.. mine yours
overalll length 2 3/4 3 1/16
overall hight 1 1/8 1 1/4
latch width 7/8 1.0
overall width 1 1/4 1 1/4
underneath hight 13/16 11/16
latch thickness 3/16 3/16
my corner peice has two sscrews to attach to the fram, one from the underside of the tops frame into the corner piece, and one from the outside of the right side frame into the corner piece. I hope this is enough info. There are no other marking or lables on the window. Email me if you need more
