Assertion: porcelain's mark | /r/HasProperty | stamped
Facets:
Source sentences:
text: Mark is stamped over what appears to be a Schumann whiteware mark.
text: Or the fact that marks which are stamped rather than hand-painted are more commonly found in later 19th century and 20th century porcelain, so seeing a piece bearing a stamped Qianlong mark would point towards a later date.