Paul, I agree that it is Czech it bears a reasonably strong resemblance to the glass on this piece:
http://www.glassmessages.com/index.php/topic,28185.msg153424.html#msg153424This one appears to be a bit thinner in construction, and also less intense in color. It appears, at least as well as I can tell in the image, to have the same layering of glass. It may simply be a later piece, as the form of this one would lean me in the direction of the 20's or 30's.. I would leave the final call on Kralik or not to Alfredo.... but my tendency would be to say it is.
Anita,
Yours does not have the threading, but other than that it sure looks the same. Alfredo uses white frit, which this piece appears to have used, as a marker for Kralik. I also, personally, associate that particular pattern of metalwork with Kralik, although others may have used it also. It seems I see it on pieces I can identify as Kralik.
It appears on both vases and also inkwells.
Craig