My answer explains this, If in 1989 when the 5300 was launched it was Playmobil's policy to produce 10,000 of a product and then no more until these were all sold, then they would not have produced more of the 5300 in 1990, 1991 etc. until the first 10,000 had been sold. Then, they would produce more.
When Playmobil's productuon policy changed to production based on orders, I don't know.