293A. Possession of indecent photograph of child

he had legitimate reason for having the photograph or pseudo-photograph in his possession;

he had not himself seen the photograph or pseudo-photograph and did not know, nor had any cause to suspect, it to be indecent or obscene; or

the photograph or pseudo-photograph was sent to him without any prior request made by him or on his behalf and that he did not keep it for an unreasonable time.