4 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 PBk19 Slate / Davy's Gray + PBk7 Carbon Black + PY42 Yellow Iron Oxide.
Who makes it
PB15 Phthalo Blue + PBk9 Ivory / Bone Black + PBr43 Pigment Brown 431
- Grumbacher Pre-Tested Artists' Oil No. P064
PBk6 Lamp Black + PBr7 Natural Iron Oxide + PG23 Green Earth1
- Holbein Artists' Oil Color Davy's Grey · No. H375PG23 PBr7 PBk6LF I Semi-transparentSeries A20 ml tube · 40 ml tube · 50 ml tube* · 110 ml tube*About Holbein
PBr7 Natural Iron Oxide + PG23 Green Earth1
- Old Holland Classic Oil Colours Davy's Grey · No. A358PG23 PW4 PBr7LF ISeries A18 ml tube* · 40 ml tube · 60 ml tube* · 125 ml tube · 225 ml tube · 475 ml tin* · 1000 ml tin*About Old Holland
Sizes are the ones each line is sold in; marks a size only some colors come in. Check the store for a particular color.