Ohhhh! It is FABULOUS ! LOVELY
Congratulations with this wonderful find !!!!
As Andreas says, Siku makes many tractors and such now, but many years ago they made the most wonderful, often unpainted little models :
Her is the donkey together with the Schleich Westie to show the size :
Later they also made very nice, more "ordinary" farm animals, the horse here is one of a pair that pulled a horse cart :
Sorry, I can`t remember the years they were made