Watch List notes:

Pocket sundial, bone, Spanish colonial (1600s). 15.26 grams, 2-1/8" in diameter if whole. Before there were clocks and wristwatches, the only way to keep track of time of day was the sun, so small and portable sundials like this one were all the rage with important people. Surviving specimens are nevertheless rare, and generally come from shipwrecks of the period, but this one was found on land, unfortunately still with pieces lost to the elements (also some cracks) but some of it still intact with clear markings etched into the off-white bone surface.

Estimate: $60-90