What is the test for establishing that a defendant's net worth prior to the time of trial?

Many of the objections to the charge have already been disposed of as they merely repeat contentions advanced in connection with the claim that the evidence was insufficient to support the verdict. There was no occasion to instruct the jury that "the prosecution must establish defendant's net asset position at the commencement of the period," nor to give "a summary of the nature of the net worth method, the assumptions on which it rests, and the inferences available both for and against the accused." Holland v. United States, supra, 348 U.S. at page 129, 75 S.Ct. at page 132. See Gleckman v. United States, supra; Graves v. United States supra; Stinnett v. United States, 4 Cir., 173 F.2d 129.