Vintage Apothacary Pharmeceutical Mortar and Pestle

This is a wonderful old #2 pestle that I think is porcelain and marked T.M and S. Warranted Acid Proof and a old pestle made from glass and marked Made in USA #4. The mortar measures 3 and 1/8 inches tall and 5.5 inches across. It is very heavy and has small chip on the spout and one on the base. The pestle is in excellent used condition, no chips and no cracks. I believe both pieces are old. This came from and antique shop and I have no idea what it was originally used for.