You would visit a coin shop--they usually also buy gold, silver, diamonds and jewelry. Unless it is a rare coin in mint condition, it is likely to be worth about $3.
If the coin is from Italy or Turkey you'd have more difficulty: Italy switched to the euro in 2002 and Italian lira are no longer used. At that time 5000 lira was only worth a couple of US dollars. Turkey revalued its currency due to rampant inflation so if it's from Turkey it may not be worth much either.
There were two different designs of 1992 Turkish 5000 Lira coins. since the Turkish Lira was devalued in 2005, the coin is worth less than one cent US. You may get a bit more from a coin dealer.
/////About 2800 usd////CorrectionMore information is needed. Turkey has revalued its currency several times so 5000 lira could be worth very different amounts based on the coin's date. Please post a new, separate question with that information.
the lebanese lira. every 1500 lira make about 1$. the confidence in the lira is very high as it maintained it value during numerous wars. in Lebanon the lowest currency is 50 lira coin which is mostly used to clean boots from gums :). there is a 250 lira coin ( used as a quarter ) 500 lira coin. 1000 bil, 5000, 10000, 50000, 100000.... if your a tourist you can use dollars and many places take euros. but mostly liras and dollars.
1000 lira
Lira.
250 binlira
The value of a 1867 Lira stato pontiff coin can vary depending on its condition, rarity, and demand among collectors. It is recommended to consult with a coin appraiser or dealer specializing in Italian coins for a more accurate assessment of its worth.
/////About 2800 usd////CorrectionMore information is needed. Turkey has revalued its currency several times so 5000 lira could be worth very different amounts based on the coin's date. Please post a new, separate question with that information.
The exact value of a 50 bin lira coin would actually depend highly on a couple different factors. Some of these things would be the age and condition of the coin.
Türk Lirası (Turkish Lira)
Your coin (25,000 lira) has little value except to a collector, and then only if it is in mint condition. There are 1,000,000 old lira in 1 New Turkish lira, so your old lira have little money value, just curiosity value. (1 New Turkish lira is worth (March 2009) about US$0.75.) Any remaining old lira has to be converted at either the Turkish Central Bank or T.C. Ziraat Bank branches, at the rate of 1 million old lira = 1 new lira
100.000