What constitutes the possession of counterfeit notes as an "instant offense"?

The "instant offense" in this case is the possession of counterfeit notes on or about October 26, 1988. Possession is a continuing offense. See, e.g., United States v. Jones, 533 F.2d 1387 (6th Cir.1976). It appears from the record before the district court that Kayfez possessed the counterfeit notes continuously from the time he apparently made them until they were seized in his residence on October 26, 1988. He therefore committed the charged offense of possessing counterfeit notes at a time critical to the application of 4A1.1(d) and (e).