Traditional Chinese Red White ceramic mug with lid (never used)

Mug has been sitting in mother's display cabinet for many decades but has not been used.  There is a slight dark stain on the rim that has always been there according to mother see last 2 photos

Circumference 8.4cm   Height 8.5cm without lid, with lid is 14cm height

Pick up in Doncaster VIC as item is fragile