This green jasper mug with the Masonic Square and Compasses and the Letter "G" was German made by Schafer and Vater Co. in the early 1900's. It is wonderful mug and was probably mass produced so other ones are out there!
This Masonic Mug was made in 1913 for Coatesville Lodge No. 564 F.& A.M. by the Thomas Maddock's Son's Co., of Trenton, N.J. which is printed on the bottom.