Old Style

Let’s take a look at this serif sub-type: Old Style Serifs. They certainly look old, and that is because they date back to the mid 1400s. One of the main features of this category is that their axis often inclines to the left, which means that the thinnest parts of the letter forms appear on the angled strokes: 

 Featured Typeface: Arno Pro by Robert Slimbach for Adobe

Featured Typeface: Arno Pro by Robert Slimbach for Adobe

 You can see in this image how the thinnest parts of the stroke are inclined to the left.

You can see in this image how the thinnest parts of the stroke are inclined to the left.

 Arno Pro Regular + Italic.

Arno Pro Regular + Italic.