There are a lot of details to get correct for a Porsche 356 tool kit. Correct Klein screwdrivers, not the10,000 volt ones that Porsche supplied after around mid 1968. My kit also contains the 4 wrench set. Sizes are shown below, and it contains the very hard to find 12/14 wrench that IS NOT in the 5 wrench set. One should note that in the 356 C owners manual, page 100, the tool kit is described as containing 4 wrenches along with a photo of the kit. The controversy is that some 356 owners claim their C car came with a 5 wrench set. Well, 5 wrench sets were provided in 1965, but in the 912. Could some have been put in a 356 car? Who knows, but the 5 wrench set is more plentiful, as it was used throughout the 912 production.
There are many more details- like the font of the word Germany on the wrenches, which was smaller in the 356 production era than in the 912 era, even though the DROP FORGED font is the same. The spark plug wrench for a 356 is 9" long, as shown below. 912's also had one, but it was longer. Also of some study is the pliers. Correct for 356 C cars are pliers with the fish skin cross hatch style handles, raised jaws at the cutting edge, and no manufacturers name. Note the lug wrench- It has a tail to it that is not on some other 19 MM lug wrenches. Fan belts in the 356 C era were supplied by Phoenix, and the belts are dated. Mine is very seriously faded, but all the markings are present. Lastly, take a look at the Messko. Correct gauges are made in Germany, not Switzerland like the later reproduction ones. Enjoy the pictures.