Along the edge of the pen case there are three curved lines very close together. Was this done by hand?
A quick check on Jony Ive shows that he was born in 1967, and he studied, among other things Industrial Design. While CAD was a thing in and around 1986, he most likely learned the bulk of his trade at the time using technical pens, mechanical pencils etc.
The image you provided has all the hallmarks of technical drawing, but also looks to be worked up with some mechanical typefaces. My guess is that this image is a combination of hand techniques and computer-driven techniques, but there is no reason he could not have worked that up by hand.
I took a class called "Drafting" for a year in high school (7th or 8th grade) and it is taught quite rigidly so as to have all students conform to a standard which includes learning how to write letters and numbers all over again. There is very little free-hand line drawing involved (none really): you must use t-squares, triangles, compass, compound curve tools (the pink things in the photo below) etc.:
When you are making drawings that can be used make the actual parts, the measurements matter and your accuracy must be good.