The groshen is an outdated currency. It was replaced by the Euro. So current market value it's worth nothing.
If you are talking about collector's value, it's impossible to answer because you need to supply year of circulation and condition.
Which country would help as well because the term groschen has been used by a number of countries over the centuries.
It is an Austrian coin.
Groshen is an archaic term for a small silver coin used in medieval Central Europe, particularly in regions like Germany and Austria. It was typically worth a fraction of a larger currency unit, such as the guilder.
In 1907 50 cent pieces were worth 50 cents. They are worth more today.
$50
50
It's worth 50 cents.
It's still worth 50 cents.
$.50
50-100 USD
€50.00 is worth £44.72
Bowwow is worth 50 million......
It is worth 21.02 euro