From Tatiana’s TOMATObase:
An heirloom tomato from Czechoslovakia. Bred by a famous Czech tomato breeder Jaroslav Homola (Selecta firm) in the 1940s, from a cross of Mikado x Sláva Porýni x Solanum racemigerum. The breeding efforts took place on a state-owned Stupice farm founded in 1921 (Stupice is a small village near Prague, Czechoslovakia). The farm was nationalized in 1948 (as all the firms in former Czechoslovakia), then privatized again after 1989, and the 'rights' to the tomato was given to firms Sempra Praha, Seva Seed and Moravoseed.
First offered commercially in North America by Abundant Life Foundation (now Abundant Life Seeds ).According to the founder of Abundant Life Seed Foundation Forest Shomer of Port Townsend, Milan Sodomka sent him some seeds in March 1976, which included Stupice. By 1986, it was already listed in the Seed Savers Exchanged yearbook by nine SSE members, which tells a lot about its popularity back then, and it continues to be a very popular tomato in North America.
One of the 100 heirloom tomatoes noted in Carolyn J. Male's book "100 Heirloom Tomatoes for the American Garden".