Constantinopel

Public domain

Reason: it is old enough that its unknown maker is presumed to have died more than 70 years ago.

This status rests on the map's publication history, as researched by Wikimedia Commons. Check it before commercial use.

Read from: Commons licence category: PD Old (assumed); no CC BY, CC BY-SA, GFDL or deletion tag on the file page.

"Constantinopel". Wikimedia Commons. Public domain. https://commons.wikimedia.org/wiki/File:Daniel_Meisner,_Constantinopel_(FL165784808_2369981).jpg

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