A mysterious formal portrait of an enslaved man named Frederick is expected to sell for as much as $500,000 at auction in New ...

And in keeping with the tradition of royal portraits showing male monarchs in uniform, King Charles is painted here in the striking red coat of the Welsh Guards and leaning on a ceremonial sword ...

It is impossible to tell whether the person is male or female, young or old. The identity of the model is also unknown. There was question about whether the portrait was indeed drawn by Dazai ...