
Mark TOBEY
1890–1976, USA/Switzerland

1961
Signature considered genuine

1964
Signature considered genuine

Ca. 1965
Signature considered genuine

1966
Signature considered genuine

1967
Signature considered genuine

1968
Signature considered genuine

1970
Signature considered genuine

1971
Signature considered genuine

1972
Signature considered genuine

1973
Signature considered genuine

Signature considered genuine

Signature considered genuine