This pair of stamps was issued on 1 January 1872 for use on internal mailings only.  They were not released to the general public.  Because of this method of use, they are commonly found with manuscript cancels instead of traditional circular cancels.

This pair of stamps was issued on 1 January 1872 for use on internal mailings only.  They were not released to the general public.  Because of this method of use, they are commonly found with manuscript cancels instead of traditional circular cancels.