Notes: The Type C dial is the last of the gilt era and maintains almost all the characteristics of the Type A (Swiss Only) dial. There are two subtypes to this dial, which otherwise share the same fonts: one variant has the “SWISS T < 25” spread over the bottom 3 minute hashes, which is more common, and other variant has the same text spread out over 5 hashes – a ‘wide swiss’.* The ‘wide swiss’ example is the last example on this page. Thus far, the serial ranges for these two subtypes appear to overlap (both are seen in early PCG cases and in the later half of the serial range).
As compared to the Type A dial, two font changes should be noted. The first is that while the coronet, ‘Rolex,’ and SCOC text are all very similar, the ‘oyster perpetual’ is quite different and more evenly spaced on the Type C. As I noted on the Type A page, the ‘a’ in perpetual is the clearest place to note the difference. Apart from this, the other change is that these dials do not appear to come with additional markings, e.g. underlines or double swiss. Be very careful of aftermarket printing in those that do. I can’t say they don’t exist but buy the seller and vet the piece carefully.
As with all these gilt dials a variety of font widths can be seen as the printing pads became worn and had to be replaced – this phenomenon seems to be more notable on the Type C dial than other gilt dials. Some are very fat font and lose the serifs while others are skinny and retain the sharp edges (compare the first two examples below).
Most Type C dials are found in the shaped/rounded crown guard cases that are seen from 1964 onwards but early examples can still be seen with PCG/’Cornino’ cases.
*Credit to Haywood Milton for bringing these swiss variants to my attention.