I contacted Outernational a while back as I was having a few problems with two possible West-German items, that's not something I would normally do as I like doing research into pottery etc.
Anyway, I got a nice polite reply from them which I appreciated.
1. They suspected, but weren't sure, that this lamp base might be by Jopeko or by a Dutch maker called Marius Van Woerden.
2. This next piece they definetly thought was from a German factory named Schlossberg.
They said that the green windows makes this vase rare and it's something that they have never seen before.