The Hanhart just should show the 5 min countdown over 6, yes. most we seen 15min because the start rules changed over time.

Interesting to see a 5 min countdown with later non-serif font of the numbers (more later to me because the first dials mostly had serif numbers) in the standard fibreglass case of the early 70s.

Thank you for give me a new grail to hunt. I really can´t exactly remember seen one but not really sure at all and need to dig in my memories more deeply.

Most of these action stopwatches laying on the ground of a lake or landed rusty in a bin.

Will now find the movie first, hope there is a translated version too ;)