Hungary since the 16th century, formally part of Hungary since 1734; accessible by car only from the Czech side until early 2000s; remained in Slovakia despite heavy objections from the mostly-Czech property owners, whose real estate effectively fell into a foreign country. The new countries were able to solve the difficulties via mutual negotiations, financial compensation and then an international treaty covering the border modifications. People living or owning property in the border area, however, continued to experience practical problems until both new countries entered the Schengen Agreement Area in 2007, rendering the border less significant. Division of national property Most federal assets were divided in a ratio of two to one, the approximate ratio between the Czech and Slovak population in Czechoslovakia, including army equipment, rail and airliner infrastructure. Some minor disputes, such as gold reserves stored in Prague and federal know-how valuation, lasted for a few years after the dissolution. Currency division Initially, the old Czechoslovak currency, the Czechoslovak koruna, remained in use by both countries. Czech fears of an economic loss caused the adoption of two national currencies as early as February 8, 1993. On February 2, 1993 Act No. 60/1993 Coll. came in effect in Czech republic to create separate currency that was already presumed in Constitution and in Act No. 6/1993 Coll. that created Czech National Bank by stamping Czechoslovak banknotes. The stamps were prepared in secret already in 1992 after the decision about the dissolution of the Czechoslovakia was made. In December 1992 part of the reserve banknotes started to be stamped in the selected banks in secret. From 8 February to 12 February old banknotes of 100, 500 and 1000 Kčs were exchanged for the stamped ones in Czechia and a new 200 Kč banknote was introduced. Each person over 15 could exchange banknotes up to 4 000 crowns and minors below 15 years of age up to 1 000 crowns. Banknotes of lower denominations and coins remained until new ones were printed and minted. Banks in Czechia converted all money on 8 February 1993 from Kčs to Kč. In Slovakia stamps were also applyed on banknotes and a new 10 SK coin was introduced. At the beginning, the currencies had an equal exchange rate, but the value of the Slovak koruna was then usually lower than that of the Czech koruna (in 2004, around 25–27% lower). On August 2, 1993, both currencies