- Artist: Alberto Gironella
- Year: 1982
- Technique: Mixed technique with "ESTO ES GALLO" stamp
- Size: 29,7 x 24,8 cm
- Status: Ideal
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- Artist: Jules Olitski
- Year: 1999
- Technique: Watercolour pencil on watercolour paper
- Size: 23,8 x 31,9 cm
- Status: Ideal
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- Artist: Rafael Alberti
- Year: 1991
- Technique: Pencil on paper
- Size: 96 x 78 cm
- Status:
- Origins:
- Exhibition history:
- Bibliography:
- Catalogue:
- Certification:
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- Artist: Rafael Alberti
- Year: 1991
- Technique: Pencil on paper
- Size: 78 x 96 cm
- Status:
- Origins:
- Exhibition history:
- Bibliography:
- Catalogue:
- Certification:
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- Artist: David Nash
- Year: 2003
- Technique: Charcoal on cardboard
- Size: 70 x 95 cm
- Status: Ideal