J.G. Cotta
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![Cotta Transformation playing cards Cotta Transformation playing cards](http://www.wopc.co.uk/core/cache-wopc-thumbs/var/www/wopc.co.uk/htdocs/images/boxes/cotta.0a7e75b0.jpg)
Cotta Transformation playing cards
In 1804, J.G. Cotta, a publisher and bookseller in Tübingen, Germany, produced the first set of transformation cards that was published as an actual deck of playing cards.