A true antique, an antiquity actually but only by half. This is an as found estate item, a stone ushabti or small image of a mummy, buried with the deceased with the express purpose of doing any work in the afterlife upon which the deceased was called to do. The ushabti was a stand-in for the deceased and graves have been found with as many as 365 ushabti to assist the bygone with work he or she had to perform in the next life--one for each day of the year.
So much for thinking your work is done once you're gone. These tasks were apparently described in The Book of the Dead, copies of which were often buried with the mummies as well. Ushabti or shabti were made of many types of materials--pottery, stone, faience, metal, precious stones, etc. This one has a good likeness on its tiny face and four little lines on the back, perhaps indicating age. It is broken just below the elbows--I am assuming the break occurred after it was placed in the tomb and that the deceased had not been cut in half.
Dimensions are 7/8" long x 5/8" wide.