6 different recipes. Brands sell different pigment mixtures under this name, so they won't all look or mix alike. Compare the pigments below; the most common is NBr8 Van Dyke Brown + PBr7 Natural Iron Oxide.
Who makes it
PBk9 Ivory / Bone Black + PBr7 Natural Iron Oxide2
- Holbein Artists' Oil Color No. H352PBr7 PBk9LF I Semi-transparentSeries AHue20 ml tube · 40 ml tube · 50 ml tube* · 110 ml tube*About Holbein
- PBr7 PBk9LF I Semi-opaqueSeries 1Hue20 ml tube · 40 ml tube · 60 ml tube · 200 ml tube* · 500 ml tin*About Royal Talens
PBk11 Mars Black + PR101 Red Iron Oxide2
- Rembrandt Artists' Oil Colour No. 403PR101 PBk11LF I Semi-opaqueSeries 1Hue15 ml tube · 40 ml tube · 60 ml tube* · 150 ml tube*About Rembrandt
PBr7 Natural Iron Oxide1
- PBr7LF I TransparentSeries 1Hue40 ml tube · 60 ml tube* · 225 ml tube · 1000 ml can*About Michael Harding
Sizes are the ones each line is sold in; marks a size only some colors come in. Check the store for a particular color.