Ewing, Trenton, New Jersey, United States.
Also, 627 Baker Ave. Morrisville, Pennsylvania. (Just across the Delaware river from Trenton)
Specialised in applying transfer decoration to Services and University commemorative pieces.
As of 2004 they were still in business at the Morrisville address on a much reduce basis, supplying lettering on cups and sports memorabilia such as team shirts and trophies.
Date range: 1941? - 2004?.
References: Warehouse Ewing
Moulded mark, lettering is typically very shallow and full of glaze. The actual manufacturer is currently unknown. 
Later moulded mark. 
Cornell University, Alpha Delta Phi in shield on front, ~ Class of 1941. 
Impressed mark on underside of pewter lid, which has open three ring hinge. 
Ink stamp on the base of a University of Virginia '43, cosmetically similar to the featured stein. 