The Keepsake Ornaments team recently discovered that the 2015 Christmas Window, 13th in the series is missing its numbered series symbol. However, the appropriate series identification is present and correct on the ornament packaging.

Christmas Window 2015
13th in the series

Although Hallmark understands how important these symbols are to collectors, they are unable to add them at this late date, but be assured that this ornament is still an authentic edition of the series.