A great lecture by Mary Beard which really shows how little we really know about the identity of many Roman busts.
She also did a series of Mellon Lectures that cover more ground. Here is a link to the first lecture. https://www.nga.gov/content/ngaweb/audio-video/video/mellon-beard1.html All six lectures can be found here by scrolling down. https://www.nga.gov/content/ngaweb/audio-video/mellon.html
Thanks David, A few months ago I searched out all of her online videos and watched them. They are all excellent.
I like Mary Beard, too. And Mary Roach, though I don't think the latter has written about ancient Rome or coins ... yet.