Sliding Glass door handle and lock. No key. Canadian patent No 3596964

Please take a look at our 82-033 handle set. Your part resembles ours. See if the measurements are what you're looking for. Take note to hang onto your original thumb lever. You may need to reuse it if it's an odd length. For your mortise lock, our 82-218 looks like a close match. Confirm the measurements line up with one another and let us know how you make out.