A quick learner from USA says:
July 15, 2016
The first pic is an intact latch. The others are the broken one that I need to find out how to REMOVE and replace. Hopefully this helps.
Tom from SWISCO responded:
July 20, 2016
Thank you for posting. I'm afraid we don't have an exact match for this latch. To be honest, you may be better off substituting with a surface mount tilt latch. These are different than the others in that they just screw on. We have a video tutorial that shows how we do this. We find it to be an easier solution for sashes like yours. Let me know what you think!