This is a good example of an antique treen dice shaker.Note on the inside there are a number of grooved circles going around the inside all the way down the whole length of the shaker. This is for the corner of the dice to catch and be turned.There are many items described as dice shakers which are not true ones having no grooves on the inside or having a few at the very top.

Antique Treen Lignum Vitae Dice Shaker