Worth reading this page, where someone attempts to attribute the piece to Schrenkeisen
Yeah, This is what happens when cabinetmakers do not mark their work. What happens in the Jelliff case, every maker that has a female bust arm (Jenny Lind head) are attributed to Jelliff as a marketing tool whether it was built by Jelliff or not.
BTW, the "Jenny Lind" thing is bogus as well, no one really knows what or who the carved female head represents.