What is the range of cases where a defendant has been sentenced under section 5010(b) of the Criminal Code for failing to pay a fine as a condition of his probation?

The next in this line of cases was United States v. Mollet, 510 F.2d 625 (9th Cir. 1975). There, one defendant had been fined and committed to custody under 5010(b), but in effect given a split sentence: he was to serve six months and then be placed on probation for five years (a typical sentence under 18 U.S.C. 3651). The other two defendants had been fined and placed on probation under 5010(a), with imposition of their sentences suspended. The opinion does not make it clear whether the sentencing judge specified that payment of a fine was to be a condition of the probation. See 3651.