The containers in the Pharma section

[Helmut Winkler]

They also look like metallic rings to me.

So... assuming they are metal, what kind of metal? I was thinking bronze or brass. The simple containers seem a bit too plain to be edged in silver or gold, but perhaps the illustrator "deconstructed" some fancier containers (left out parts of them when drawing them) so as to create a hierarchy of containers from more simple to more ornate.

If it is metal, I guess it is tin (Sn). Cp. You are not allowed to view links. Register or Login to view.. The rims of containers were the most vulnerable part in daily use and these containers must have been valuable, good reason to keep them from damage, not  to mention to keep the content from contamination. Tin was used until the early 20th c. to shield  and repair the rims of ceramic vessels, especially drinking vessels,  e.g. 'Bierkrüge', you could keep your beloved 'Reservistenkrug' and protect your lips