:wow: :wow: :wow: :wow: :wow: :wow: :wow: :wow: :wow:
Reading your post, I suddenly remembered that there had been a fire brigade version, not by Playmobil themselves but by Antex.
The addresses on the 24 letters (I only have 23, I think the missing one may be Antex in Argentina) and 8 small parcels include many of the international companies licensed to produce their own Playmobil sets in 1978.