WORK "CRACK DOWN" after Keith HARING (1958-1990) Mixed media (gouache...

WORK "CRACK DOWN" after Keith HARING (1958-1990)
Mixed media (gouache and felt pen) on paper. Signed upper right "K.Haring".
On the back:
- An inscription with the words "Certificate of authenticity by Julia Gruen dated 1984".
- A dry stamp "The Keith Haring estate".
- A round dry stamp in blue "Keith Haring, authorized by the estate of Keith Haring".
- A round dry stamp in black "Authorized by the estate of Keith Haring, Keith Haring, KH".
- A red "K.haring collection" stamp
- A black "New York Gallery" stamp
- The inscription at bottom left on the back "Museum of Modern Art, 11 W 53rd st, New York, Ny 10019"
Provenance: Private collection
Size : 30 x 21 cm approx.
Good condition