Section 343.3. Rules of evidence; identification by means of previous recognition in absence of present identification

1.  In  any  juvenile
  delinquency  proceeding  in which the respondent's commission of a crime
  is in issue, testimony as provided in subdivision two may be given by  a
  witness when:
    (a) such witness testifies that:
    (i) he observed the person claimed by the presentment agency to be the
  respondent  either  at the time and place of the commission of the crime
  or upon some other occasion relevant to the case; and
    (ii)  on  a  subsequent  occasion  he  observed,  under  circumstances
  consistent  with  such  rights as an accused person may derive under the
  constitution of this state or of the United States,  a  person  whom  he
  recognized  as  the  same  person  whom  he  had  observed  on the first
  incriminating occasion; and
    (iii) he is unable at the proceeding to state, on the basis of present
  recollection, whether or not the respondent is the person  in  question;
  and
    (b)  it  is established that the respondent is in fact the person whom
  the witness observed and recognized on the second  occasion.  Such  fact
  may be established by testimony of another person or persons to whom the
  witness promptly declared his recognition on such occasion.
    2. Under circumstances prescribed in subdivision one, such witness may
  testify  at  the  proceeding  that  the  person  whom  he  observed  and
  recognized on the second occasion is the same person whom he observed on
  the first or incriminating occasion. Such testimony, together  with  the
  evidence  that  the  respondent  is  in fact the person whom the witness
  observed and recognized on the second occasion, constitutes evidence  in
  chief.