https://images.kb.dk/present?id=fr535029
This one also uses Sylt
https://images.kb.dk/present?id=fr535011
And so do this
https://images.kb.dk/present?id=fr535001
What on Earth was the Royal Library thinking when they uploaded those maps in that format? What is this Djvu browser plug-in you need to install in order to see them? If I click the link to install the plug-in I am redirected to some Japanese fonted page where nothing but obscurity resides.