Hi, I have one of these, it took me a while to figure out the exact pattern, it is quite similar to Strobachova 6430, There is another pattern, Spinar 6308 which is flattened, the Strobachova quite rounded. My 6308 is like yours, a slightly odd colouring for Skrdlovice, but still recognisable. I agree with Rocco it looks green to me not yellow. They are quite small vases too for Skrdlovice, both about 10cm. I would say probably Strobachova 6430, which I have in light blue.