Bobby Jack Hendrix was charged with assault with intent to murder, MCLA 750.83; MSA 28.278 (Count I) and assault with intent to rob being armed, MCLA 750.89; MSA 28.284 (Count II). A jury found him not guilty on Count I and guilty on Count II. He was sentenced to a 10 to 20 year prison term and appealed as of right.
On March 26, 1976, this Court in an unpublished per curiam opinion remanded the case for a "Robinson hearing”.1 On July 26, 1976, a Robinson hearing was held and the court found that due diligence would not have produced the missing witness and, further, that her testimony in any event would have been cumulative. Defendant appeals as of right from this decision.
The prosecutor’s proofs indicated that on February 1, 1974, a Detroit tavern was robbed by three *35armed men. An off-duty Detroit police officer was shot and wounded. The three men escaped. Defendant was arrested the next day. Various employees and patrons of the tavern testified as to the occurrences of February first. Defendant was identified by three of these witnesses. Some witnesses thought the defendant went to the back of the bar and held a gun on the cook and others testified that defendant sat at the bar and pulled out a gun and announced a robbery. Testimony was given by various witnesses that they saw the assailants fire their guns.
During the trial, defense counsel and the prosecutor stipulated that the robbery and assault had taken place and also stipulated that the only issue for the jury was the identity of the criminals.
At trial, the trial judge found that the prosecutor lacked due diligence in the production of the res gestae witness, Mrs. McMichael. The prosecutor admitted this to be true. The trial judge at the Robinson hearing found that due diligence would not have produced the missing witness. We do not agree.
The identity of Mrs. McMichael was known to the police and her name was indorsed on the information filed March 11, 1974. It can hardly be said to be a duly diligent effort by the prosecution to attempt to serve the subpoena only two days prior to trial on August 6, 1974. Had the police contacted Mrs. McMichael a reasonable time before trial, she would have known not to leave on August 3, 1974, for a two-week vacation and would have been available as a witness. Therefore, the trial judge erred in finding that due diligence would not have produced the missing witness.
An exception to the general rule requiring production of res gestae witnesses exists when the *36testimony of the witness would be merely cumulative. People v Cornell Harris, 56 Mich App 267; 224 NW2d 57 (1974), People v Gordon, 60 Mich App 412, 416; 231 NW2d 409 (1975), People v Keefe, 69 Mich App 431; 245 NW2d 78 (1976).
The issue then becomes whether the testimony of Mrs. McMichael would be cumulative. After listening to the testimony of Mrs. McMichael at the Robinson hearing, the trial judge determined that her testimony would have been cumulative. We do not agree.
The cases of People v Castelli, 370 Mich 147; 121 NW2d 438 (1963) and People v Gordon, supra, are apposite. In Castelli, supra, three witnesses testified to a robbery and the robber’s flight from the scene. The three corroborated each other in description of the robber and where he ran. According to a police report, another woman sitting in a nearby car told police that at that time and place she, too, saw a man running where the others testified that they had seen him. Her description of the man differed from that of the other witnesses. The Court stated in 370 Mich at 155 in part as follows:
"She was not called as witness by the people nor was her name indorsed on the information. The first that defendant or his counsel heard of her was at trial. The court stated that it did not appear from the police report that the witness had been able to get a good view or more than a fleeting glimpse of the running man or that she would be able to identify him and that, hence, it did not feel that the trial should be delayed so that she could be brought in to testify because it did not appear that her testimony would be helpful to either party. Inasmuch as identity of the robber was a major issue in the case, the testimony of every witness who could describe him was of utmost importance. If, as the police report indicates, the description by one not called *37as a witness would be in conffict with that of those who did testily, defendant was entitled to the beneñt thereof before the jury. Her testimony would not have been merely cumulative. Failure to indorse this woman’s name on the information and to produce her at trial was reversible error.” (Emphasis added.) (Citation omitted.)
Thus, in a case practically "on all fours” with the case at bar, the Michigan Supreme Court concluded the testimony of an additional res gestae witness as to the identity of a robber, which differed from that of three other witnesses who had identified defendant as the robber, was of the utmost importance, was not cumulative, and her failure to testify was reversible error.
In People v Gordon, supra, the res gestae witness whom the prosecutor failed to produce was one of several persons who had the opportunity to view the perpetrators of an unarmed robbery. The witness testified at the Robinson hearing that he had witnessed the robbery but at a lineup two days later he could not identify defendant Gordon as the perpetrator. This Court stated in part in 60 Mich App at 416:
"There has been no showing by the prosecutor of why the witness was not endorsed. Although the witness’s testimony concerning the description of the robbery was cumulative, the fact that he had a favorable vantage point and yet was unable to subsequently identify the defendant was relevant testimony.”
In the case at bar, defendant was identified as one of the perpetrators of the robbery by three witnesses. There was no dispute that the robbery and assault had taken place; only the identity of the perpetrators was at issue. The res gestae witness who was not produced at trial had viewed the *38perpetrator from a unique vantage point when she handed him change at the bar, yet she was unable to identify defendant Hendrix as the perpetrator. Her testimony would thus have been relevant and would not have been merely cumulative in that her nonidentification of defendant would be in conflict with that of those who did testify. The trial judge therefore erred in his conclusion that Mrs. McMichael’s testimony would have been merely cumulative.
Reversed and remanded.
People v Robinson, 390 Mich 629; 213 NW2d 106 (1973).