METAL STEM & Screw thro bowl
That is what is marked on top of shank, UNIQUE, hardly accurate since there must have been more than one made.
Unusually for this type of pipe, the end cap is a push fit, as well as the stem. They both push into a cork like composite within the metal shank
There are no other markings to indicate maker or origin
Overall length is 5 11/16 inch (145 m/m)