Very old Celadon Longquan Tea Cups?

[decoflyer]

I'm looking for opinions as to what these are, how old they may be, what sort of value they may have. They are slightly different sizes but each one measures about 1-3/8" tall x 2-3/4" top diameter x 7/8" foot.

They appear to be very old with plenty of chipping around the rim and each has several hairline cracks running through. Both have a cobalt blue dot on the bottom...some sort of mark?

More pics here:

http://i50.photobucket.com/albums/f322/decoflyer/celadonteacups5_zps1794a85b.jpg

Thanks!!

[peterp]

Tea or wine cups. As there is neither a readable mark nor otherwise a decoration, we can only rely on age signs and glaze/shape for evaluation. In my view this could be early 19th century.