Hello and welcome to the board. I've moved your post from the Czech discussion
forum into Glass which is an identification
forum, thus the proper place to ask your question.
Now, your image is way too small to see detail - you do not have to make it thumbnail size yourself, the board does that for you - you give it a bigger pic and it makes you a smaller clickable thumbnail plus we can still see the original bigger pic. Smart eh?
You just need to upload an image with its longest side around the 700 pixel mark and saved for web and it should come in under the file size limit of 125kb. So if you'd like to have another go we can see what you have.
I suspect it may be a Drost vase for Zabkowice but bigger pics will confirm. For reference also, please add side on shot like you have above, plus a shot of the base as that can tell us a lot by what (or isn't!) there.
Also add sizes please, they help too.
Now I've done the teacher-ish bit
here's a topic showing the aforementioned Drost vase: http://www.glassmessages.com/index.php/topic,40754.0.html
- as you will see, Zabkowice is Polish not Czech (that's why I said post in Glass to begin with.)
OK, if you get stuck and need help please just shout and one of use will come to your aid. Enjoy the board!