M[u]ddy, the pre-patched ones you posted are not actually prepatched. The sum of data000.lab is the unpatched one.
It's the 2007 version that has the patch included (and also works on modern Windows versions out of the Box), but apparently the patch is applied, as if it was installed separately.
How/Where was the pre-patched English version distributed?
By the way, the 2007 version doesn't come with the nasty copy protection. The unprotected DATA003.LAB still has the junk data from 1A572FD-24572FC, that's why it it produces a different checksum.