I found @Hellzero's comments helpful. I knew that there were two "generations" of the AFR, but didn't know how to tell them apart. (Or indeed, which generation this instrument belonged to.)
The fact that Hellzero refers to this model (and not the earlier one) as the "best designed bass ever" increases my GAS for this particular sale.
Good luck with the sale. They don't come up often, and I expect someone will be on this very soon!