This is an example of the 1890's Lagos postcard, which is not that uncommon. However, what makes this one interesting is that it was re-directed. It was sent from Lagos on December 7, 1896, and was addressed to Lieutenant Abel in Berlin. The card arrived in Berlin on what appears to be January 2, 1897. It was re-directed to Blankenburg, arriving there on January 3, 1897.
I would very much appreciate any comments that you can offer about the above six covers.