Just found some test photos of the Tevidon Zeiss 25mm f/1.4. It is a vera tiny lens and the focal lenght and aperture are very promising.
So I searched for some image samples and I found some here:
Fits perfectly on the include("buy/e-p1.php"); ?> but the bokeh is not very nice. Let me know if you find more about that lens!
I found some lenses of this lenses on ebay: