schoolboy
·My Ultraman Speedmaster was on a 7881(3) serial and was collected by myself mid September 2018. Those were delivered as soon as they were ready without any hanging about in safes or shop windows so likely left Bienne August to September that year. I don't think you can get a more firm indication than that.
Just a quick question, what do you mean when you write 7881(3)?
What is the three for?