According to Wikipedia: Count István Széchenyi was a Hungarian politician, theorist and writer, one of the greatest statesmen of Hungarian history. István is a Hungarian name equivalent of the name Stephen. 1848 is the date of the Hungarian revolution.
This coin, minted in 1948, is made of 50 percent silver, with its 0.322 troy ounces of silver giving it an intrinsic base value. This coin will always be worth at least 0.322 times the current price of silver, even if very worn and damaged. (Look up the current price of silver on web sites such as kitco.com.) For coins in good shape, like the one in our picture, the value will be more. Here are some typical values:
worn: worth its weight in silver
average circulated: $12 US dollars
well preserved: $15
fully uncirculated: $25