Sixty has a Blue Label 1997 Model M on which he installed an industrial case (Unicomp had some spare cases).
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(http://keyboardporn.com/files/gimgs/40_2.jpg)
The seller may have done that.
Now, if Unicomp would change the label covering the LEDs to something more cleanly designed like the one in the pic, I think I might be a bit more interested. But me, being as anal as I am, I don't like a few things about Unicomp boards when comparing them to the original model M by IBM. (My comparison to follow in a couple of days)
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(http://keyboardporn.com/files/gimgs/40_2.jpg)
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That one looks very beautiful....