JM, your right that the so called "Moravian Malt" was the undermodified malt of old, but jeez, you would be hard pressed today to find anyone using it. Much better to describe the malt as "low Kolbach" (the EBC index of modification). Modern base malts are all well modified - around 42 to 48 Kolbach index. The old under modified malts would have been in the low to mid 30's Kolbach. Such malts will give good extract but also give enormous lautering and beer clarity problems - something that would not have bothered the brewers of yesteryear with their unfiltered pilsners etc.
Actually the Czech Republic maltsters are now owned by the French Soufflet Group and they dont even mention an "undermodified" product. I met with the rep from the then Tchecomalt Group from the Czech Republic at a brewing show in Germany 4 years ago just before they were taken over by the Soufflet Group and discussed the so called "undermodified malt" He indicated that hardly anyone today used it, preferring the well modified versions which of course the Czech maltsters produce in vast quantities.
Time moves on.
Wes.