Swiss art historian Henri Stierlin, author of a dozen works on Egypt, the Middle East and ancient Islam, says in a just-released book that the bust currently in Berlin's Altes Museum was made on the orders of Germany archaeologist Ludwig Borchardt on site at the digs by an artist named Gerardt Marks... He said he believed it was made to test pigments used by the ancient Egyptians. The historian said the archaeologist had hoped to produce a new portrait of the queen wearing a necklace he knew she had owned and also carry out a colour test with ancient pigments...