Chinese Pocelain PLaques Help With Marks and Signature

[CW789`]

Hi

I am hoping someone can tell me the makers marks on these two porcelain plaques. Who the artists are really :)

hope someone can help

Kind Regards

CW789

[Stan]

Sorry I can't help, Im sure Peter can, but I would like to comment on  the worm holes in the wood frame, that is mostly found in European furniture.

[peterp]

Please upload pictures. We should evaluate by the object, not by marks or signatures, etc.
Signatures often do not correspond to the age of the porcelain painting (they may be fake). This one was allegedly made by one Zhang Zhi-tang in the cyclical year or ??  (Gengyin).