PY3 (but soon to be changed). Slow Drying. Transparent. Very Good Lightfastness. High Oil content.
"At present I am working on a re-specifying of the pigment of this paint in order to upgrade its permanence. But the characteristics will remain the same: an Arylide organic lake pigment, of itself very fat and transparent, but which has an enormous tint power, shooting right through mixes with a pervasive range of bottle green undertones. Beginners should handle it with care when adding it to other paints! It can heighten the Phthalo lakes without making them opaque, and when it is made itself opaque with the addition of white the results are almost luminous." - Michael Harding