Old jacket "found"

When packing for my trip to Poland last week, I wanted a sort of summer jacket with large pockets. Removable arms would be a plus.
I had one such hanging in a closet. But what did I find in the Tenson jacket (perhaps more than 25 years old= when emptying its pockets? An airshow programme from august 2001.

Do I need clothes I only use once per decade? Sure: Not every winter is very cold.