  In this paper we present the physical characterization of sintered
RuSr2GdCu2O8 samples prepared with different procedures. In particular we show
how the physical properties are affected by the final step, which is one week
annealing in flowing Oxygen, and how extensively the annealing procedure
affects the visibility of the superconducting behaviour. Moreover, we analyse
the complexity of the d.c. magnetic measurements performed on such type of
samples below the superconducting transition and the possibility to decode
them.
