Greek pottery?

[Gergo G]

Dear all,
This piece of pottery was found in greece (sounion). Do you think it could be a part of an ancient vase/amphora or it is just a modern fragment? As it was found near to a known archeological site I have a good feeling about it. I think it is a part of the bottom of a vase.
Thanks!

[djmacdo]

Very likely.  It looks like a piece of ancient pottery.

[SC]

It is part of the bottom of a plate or bowl.  It is upside down in your photos.  The circle is part of the foot ring or basal ring.

Hard to tell what era.  Greek, Roman, Byzantine.  Usually fine ware is easier to date than coarser ware.

SC