I do not think your first bowl is from the Rhapsody range, usually Rhapsody pieces are made with clear glass and applied prunts or stripes of colour. However, I think it is Czechoslovakian, possibly the same glassworks (Mstisov) and it looks very much like a vase with two heavy coloured vertical 'stripes on an amber body. I think the vase that I am thinking of is in Mark Hill's book Hi Sklo Lo Sklo but I still don't have a copy.
Here is a link to the type of vase I am gibbering on about but this one is a different colour http://www.glassmessages.com/index.php/topic,27608.0.html
The base of your blue bowl does look like a Chribska kind of base to me.
Btw, neither of the bowls are 'Sklo Union', the Sklo Union group of glassworks produced pressed glass.