In my opinion a paint made from two of the best modern pigments, Quinacridone and Nickel Azo, both are very high chroma, very stable and have an inherent, unmatched, luminosity. The swatch doesn't do justice to the paint.
It displays beautiful transparency which when exploited by using the paint thinly or with mediums gives very luminous, orange/yellow, warm hues.
There is a lot going on with this paint, it seems to shift in hue depending on the light and how it is used, always a sign of great paint in my opinion.
In masstone it is a mid-value, rusty red, orange, brown. Quite frankly it is difficult to pin it down. It's going to be fantastic in glazing.
It has a strong tint power and makes a wide range of delightful, creamy, muted, orange/yellows with an almost earthy feel.
Technical Overview
Pigments - PY 150, PR 209, PV19
Binder - Linseed Oil
Drying time - Average
Tint Power - High