This is a transportation token, denomination 20 para, used for the famous Galata Bridge in Istanbul. According to Numista, the date is 1913.
The tokens are still easily found, as many were collected over the years. As always, condition matters. Here are approximate catalog values:
worn: $1 US dollar approximate catalog value
average circulated: $3
well preserved: $8
fully uncirculated: $20
These are catalog values and must be adjusted to obtain actual buy and sell values. See our Terminology page.