Mercer’s most valuable foreign tiles are Cuneiform Tablets. Some of these date back to 2300 BC. Mercer mounted these tablets surrounded by his tiles on one column in the Saloon. It is a fascinating display. This image had over 10 levels of dynamic range. It is a combination of a 5 image HDR blended together with multiple single images to capture the bright exterior and the tiles in the shadowed foreground.
Below is a close-up of one of the oldest tiles dated around 2300 BC.