"Marked playing card". Created with two images rom the collection of [Hans Gross Kriminalmuseum / Universität Graz](http://gams.uni-graz.at/o:km.8703) via [Europeana](https://www.europeana.eu/portal/en/record/09403/o_km_8703_CHO.html?q=gezinkte+Spielkarte+KM-O.811#dcId=1577716573621&p=1).