Does anyone know?

From my research, I can say the following:
--Almost the same structure as "Cooper" (by Oswald Bruce Cooper).
--The outer line of these typefaces are thickened by "Stroke" command of Adobe Illustrator.
Inferred from the lower case [a] in the first and third lines of this image.
--But even if I make "Cooper Light" fatter, it will look different from the typeface in this image.

If you start with Cooper Old Style you can achieve the same result as in your sample by manipulating the shapes and adding a stroke to increase weight.