Sliding door handle and awning window crank
Your door is very old and I don't believe we have an exact match for the handle. That said, you could possibly use our 82-005 as a substitute. This is a surface mount set, meaning that it has its own self-contained mortise. That makes it very versatile. I think this may be our best match.
We carry a ton of different awning operators that look like what you show here. The best match depends on the hole pattern and link arm, the latter of which is obscured in your photos. Your first step should be to browse through our selection of awning operators here to see if any of ours match up. You will eventually need to remove yours from the window entirely to confirm the best replacement.