The best bit of this book is the story about Queen Elizabeth II and the Vasa. I'm not going to ruin it for you. This book is about things that aren't displayed in museums. The reasons for not being display vary, and I am sure that like me, you will quibble about which museums she visits. Still, an interesting book that introduced me to some new things, including the work of Pritchard who painted underwater.
Do wish the pictures had been bigger though.