Can anyone identify the painter of either picture below? Although they have different signatures both frames have the same series of numbers engraved on the back (MD-W-452-051-115-399-R). What might those numbers mean? They could be paint-by- number pics for all I know about art! Sorry that I can't seem to get the signatures any clearer. Any and all advice is appreciated.

I think these pictures of the signatures may be better.