Just Speculation on my part, the series started in 1999, a different time, 5 series made out of 8, 20 pieces each, how many at that time would have committed to buying the full 8 pieces? One or Two collectors maybe Three at the most. My Theory is they made the remaining 3 Cabinet Pieces for them privately. I was expecting one of those Cabinet pieces to be based on the AP Concept case, maybe a Starwheel Grande Sonnerie, Just Speculation π