1. It astonishes me to see all the "cheese slicer" clamps on the engine. The original type are easily available and well documented. It shouts to missing of details.
2. No battery hold down.
3. Missing the three small rubber bumper guards that go on the firewall flange.
1. One of the folks that worked on my car, called these clamps "Fat A** American Clamps". This probably points to a restoration done in USA? As you point out, the original type are easily available. In fact, when my car was in for transmission work 20 years ago, the shop changed all the "Fat A**" clamps to the proper ones. He had a display of them on his counter!
2. Battery hold downs are a common missing item, and often you see jerry-rigged substitutes. I recall some discussion here years ago on how costly the original hold down is, so people are SHOCKED at the cost and refuse to buy one. The other reason is that they are very specific in size, and I've seen a number of batteries installed where the original won't fit.
3. Cheap and easy fix...interesting to note that mine was missing these for YEARS and this was never pointed out to me in a Concours, but at a PUB. They tend to move around that lip, sometimes sticking to the underside of the hood/bonnet, and thus can easily get lost...