heavy old white ironstone china coffee cups mugs, 1920s vintage

1920's - 40's vintage railroad china coffee mugs... this is a lot of six, not identical but close in size and shape. (These are from several different makers, Victor, Shenango, and Carr China.) All are about 3 1/2" to 3 3/4" tall.

These coffee cups have all been used, and all are showing wear, though no chips or cracks.