Nope, Sklo Union was the name of a group of state-owned glass factories in Czechoslovakia. They all produced pressed glass, there's a full history of SU in Marcus' book referred to above, but to get you started have a read of his website here:
http://www.sklounion.com/Sklo1.htmlBy the way, you can only edit your own posts for an hour after making them, so you won't be able to remove the blue vase pics without help from a Moderator, so I'll go do that for you now. If you'd like to repost them into a new topic we may be able to find out more. :thup: