[DCRM-L] Fill-in colophon?

[Nickeson, Walter]

I have a book published in Genoa in 1589 whose colophon ends:

Anno MDLXXXIX. Mense Maij. Die     & Hora

There is a blank space following "Die" a little wider than that word.
"Hora" is the last word of the paragraph, so the whole bottom half of
the page following it is blank space.

Are the blanks for the date and time to be filled in by hand, or were
they intended to be filled in with type later but perhaps left unset by
accident? I've never (in very limited experience) seen anything like
this.

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  Walter F. Nickeson, Catalog &
    Metadata Management Librarian
  Rush Rhees Library
  University of Rochester
  Rochester, NY  14627-0055
  wnickeson at library.rochester.edu 
  (585) 273-2326  fax: (585) 273-1032
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