Hi Frank,
I cannot really help much but I admire this piece. Also, I agree with you about some Monart similarities in the techniques used at this time. I mentioned to Jindrich some Monart pieces Nigel Benson had for sale at the National Glass Fair in Solihull this year, specifically regarding the stylistic similarities between some post war Cz production and some Monart. Nigel was kind enough to give us a potted verbal history which was instructive. As you say with your piece it does not appear to be a Skrdlovice production piece and Veliskova appears by this time to have almost exclusively worked for them at this time, though she had according to Petrova (and some pieces I have evidence for) designed for CMS before she came to Skrdlovice. Reich in the 1930's also produced some similar work to this (at a time when E. Beranek was working there) though Glassexport would not likely make an error this far adrift. It does not seem a very Veliskova piece but she was a diverse designer and it is not totally impossible. Also, Skrdlovice was especially linked to experimental glassmaking around 1951 and perhaps this was very small scale production which did not touch the pattern books. A very interesting piece that may not have been far removed from Skrdlovice at this time. Their designs even pre 1950 could be quite complex and the familiar straight "pulegoso" style "schaumglas" mainly designed in the 40's, seriously under-represents their technical capabilities, since some pieces form this factory are refined by this time, including clear casing etc... certainly by 1951, in my opinion, this may have been possible at Skrdlovice... though I am not able to make more specific comments beyond this at this time and I cannot necessarily help take your attribution quest much further down the road.....
Robert (bOBA)