Thanks all! (And Ohio for the link, interesting reading)
So Managanese does produce a green to orange glow
doesn't make things easier...
I would now think that the green glass in my Skrdlovice pieces in my first pic does contain Uranium.
The clear glass in the vase in my second pic and the fish could have Manganese glow.
With the tall vase in my 4th pic I am quite sure it is Uranium, too -- not the slightes yellowish hue, and the green glow under UV was obvious in daylight as well...
(My pics are not really convincing I know -- I photographed with the camera in one hand and the UV torch in the other