https://www.google.com/search?client=firefox-b&ei=kpAKXNHfCoXksAWkurT4DQ&q=Thun+china+marks&oq=Thun+china+marks&gs_l=psy-ab.12..0.5576.17168..21278…0.0..0.394.5623.2j12j1j10……0….1..gws-wiz…….0i71j35i39j0i67j0i20i263j0i131j0i131i67j0i10j0i22i30.kHmMHxIBbOk

Could be this one but need to see the cup and the mark on bottom !!