Royal Palace Het Loo.
Special Collectors item by KLM.
Collector’s edition No. 8 (Royal Palace Het Loo) is only awarded to those who have flown World Business Class at least 60 times a year for 10 consecutive years, and having accumulated more than one-million air miles in KLM’s frequent-flyer program. The little blue and white palace model is presented to the Platinum-for-Life passenger on a silver platter at the end of the qualifying flight. And no, you can’t keep the silver. The bar may be set high, but 45 customers received this piece in the first year it was issued, so it is not unattainable!
(This information comes from the following website: https://kingdombythesea.nl/site/en/news/klm-house-index-2020/ )