1898 56° Krone / Adler Overprints
In December 1898, a second set of overprints was issued. The underlying stamps are German Krone / Adler Issues. The "China" overprint is at a 56° angle, as opposed to 45° overprint of the March 1898 overprints.
Like the underlying Krone / Adler Issues, there are numerous color variants of several of the values.