Those German designers certainly knew a thing or two about design, and this packaging looks as if it was created in the 1920's and it's never been meddled with or 'improved worse' since that day. Simple, bold and they stood out in the gloom of and old tractor shed too.
For those who are interested they are the starter cartridges for a two-stroke Hurth diesel on a rotahoe. In today's language a rotovator.
Right three turns for compression, starting handle to two o'clock and away she goes. Now to get those tins in a safe place.