What can be said about this uniform?

[Rittmeister]

I only know for sure it was taken in Hannover. I assume this is a Leutnant in an infantry line regiment?

[Chip]

Rittmeister,

I doubt that it is infantry. The collar looks too dark. It appears to be black piped in red (Verkehrstruppen, Artillery, etc.) The M1866 boards don't give much information either.

Chip