We recently replaced the handle on both our fridge and our freezer. We were able to buy replacements off the shelf from our local Frigonautica dealer at about NZ$150 each.
We found that not having the handle on the door did not cause a loss of cold as the seal kept the unit firmly closed.
Hi There - A photo is attached. My personal view is that the new handle looks nicer than the old one. As a result we also changed the handle on our freezer to match. I have also attached the fitting instructions. Sorry but I no longer have the invoice so cannot give you a part number. I suggest that you Google for your local Frigonautica dealer and go from there.