It is an heirloom tomato that originates from Czechoslovakia which is now the Czech Republic. The seed was then introduced to North America in 1976. It is pretty easy to grow this type of tomato variety and amazingly; it is naturally diseased resistant.
Stupice tomatoes are an heirloom variety and they are open-pollinated. Hence, they are not hybrid tomatoes. This also means they have never been cross-bred or they have not been cross-bred for a very long time