The Dodo was brought to Jehangir's court via Portuguese controlled Goa and an unsigned painting of it in the Hermitage Museum is attributed to Mansur.

Another unsigned painting from Mrs. Rockefeller's collection is an endearing classic, "Baby in Red Chair."

"He's like an unsigned painting" is the clever summation Behrman gives of this Warhol wannabe.

She became a leading folk-art historian and wrote six books and scores of magazine articles identifying the artists of unsigned paintings and documenting where and when they lived.

The ceiling bears a large unsigned painting, "The Eternity of Angels," encircled by a gilt molding.

Itoh left many of his paintings unsigned, possibly because he was in Hawaii illegally, and some of these unsigned paintings have been incorrectly attributed to Tavernier.

In the early 20th century, the art historian Osvald Sirén identified a group of unsigned paintings as being by the same artist.

Indeed Strasbourg officials maintain that no one can ever be sure that the unsigned painting is a Vouet.

Beneath it there is a small painting of Our Lady of Grace, undated and unsigned, also from the first church.

Since each piece is signed, dated, and annoted with the location of its subject, many previously unsigned and unattributed paintings are now being associated with the artist.