The tins arrived by mail. The padded envelope with a confusingly colorful assortment of stamps; some are 1990-ies, but the red stamps are Queen Juliana stamps from the seventies at the latest. Were the needle tins posted through some kind of timewarp? Is there a wormhole to supplies for old stuff? A post by Spider explained and resolved this little mystery :)
The tin with paper inlay. Echoes of the 30-ies when there would be e.g. an instruction to use only this brand of needles and only once!
(Now to play!)