The Moravian Pottery & Tile Works (MPTW) is a history museum which is located in Doylestown, Pennsylvania.

[2] Handmade tiles are still produced in a manner similar to that developed by the pottery's founder and builder, Henry Chapman Mercer.

Mercer generally did not affix a potter's mark to tiles made while he directed the work at MPTW.

When the Bucks County Department of Parks and Recreation took over the MPTW as a working museum, all tiles made by the museum were impressed on the obverse with a stylized "MOR," the words "Bucks County" and the year of manufacture.

The reproduction tiles made today are made using Mercer's original molds, clay that is obtained locally and has properties similar to those of Mercer's original source, slips and glazes that follow Mercer's final formulations, although some have been modified to reduce the lead and heavy metal content to less toxic levels.