He contends first that the District Court, in assessing sentence, improperly considered two prior convictions which were constitutionally invalid under Gideon v. Wainwright, 372 U.S. 335, 83 S. Ct. 792, 9 L. Ed. 2d 799 (1963), because, at the time of these convictions he was not represented by counsel. Assuming that such invalidity existed, appellant was entitled to ascertain, as he did, whether the challenged convictions had any effect on the length of his sentence. The District Court's finding that they had no effect, coupled with the similarity in the sentences of the two accomplices, ends the matter. Ferranto v. United States, 507 F.2d 408 (2d Cir. 1974); Wilsey v. United States, 496 F.2d 619 (2d Cir. 1974).

Appellant also complains of certain alleged inaccuracies in his pre-sentence report which he suspects may have adversely influenced the Judge. During the course of appellant's sentencing, and his subsequent motions to modify and to vacate his sentence, his counsel had ample opportunity to discuss and explain these inaccuracies. Judge Clarie, nonetheless, adhered consistently to his opinion that the sentence was "fair and just." We see no errors or improprieties which require reversal. Manley v. United States,432 F.2d 1241 (2d Cir. 1970); United States v. Carden, 428 F.2d 1116 (8th Cir. 1970).

Several days prior to his guilty plea in the District Court, appellant had been sentenced to a five-year term in State Court on an unrelated charge. The term later imposed by Judge Clarie was, therefore, made to run consecutive to his State sentence. On this appeal, appellant contends for the first time that the requirements of Fed.R. Crim.P. 11 were not complied with by Judge Clarie because he did not advise appellant of his inability to impose a Federal sentence to run concurrently with that of the State.1 Since this issue was not raised below and was never passed upon by the District Court, it may not be raised for the first time on appeal. Fields v. United States, 438 F.2d 205 (2d Cir.), cert. denied, 403 U.S. 907, 91 S. Ct. 2214, 29 L. Ed. 2d 684 (1971).

Appellant was in Federal custody at the time of his plea and was not released to the State authorities until some time thereafter following the request of his attorney. We do not perceive plain error, if error at all, resulting from the District court's failure to enumerate the possible effects of appellant's unanticipated request for permission to commence his State sentence prior to his Federal term. Michel v. United States, 507 F.2d 461 (2d Cir. 1974). We distinguish this case from United States v. Myers, 451 F.2d 402 (9th Cir. 1972), relied upon by appellant, where the defendant was in State custody at the time of his Federal plea, and the impact of 18 U.S.C. § 3568 was readily apparent to the trial judge. Cf. Tindall v. United States,469 F.2d 92 (5th Cir. 1972); Williams v. United States, 500 F.2d 42 (10th Cir. 1974); Wall v. United States, 500 F.2d 38 (10th Cir.), cert. denied,419 U.S. 1025, 95 S. Ct. 504, 42 L. Ed. 2d 300 (1974).

Affirmed.