John,
Just a long shot but our local NAPA store has VDO Gauges and I asked him about the clock you wanted. They only have the ones like mine now which are black face and white numerals but he said some of the other stores may have some left over of that style. You know the way things go. Make something for a few years and then change it so if anyone wants to replace something they have to change everything or hope to find an older style left over somewhere. Good Luck.
Ron