painted chinese placemats?

These painted papers look like placemats. 

I have three of them, I have owned them for 45 years but think they are probably much older as they were my grandmothers before that.  The gold is embossed in  a pattern of little dots.  They appear to be hand painted and the outlines are embossed ( indented through the back).

I want to know how old they are and what they are worth.