Does anyone know?

Sorry, the picture is not clear
both side are the same (with a dragon)
below, there is years "1988"

does anyone knows what coin it is?

A token made in Taiwan, diameter 24mm ...
http://www.ebay.ca/itm/182642468160
1988 (and 1976, 2000, 2012) was the Year of the Dragon.
So I guess in other years there were other designs >
1977 ~ Snake (1989, 2001, 2013)
1980 ~ Monkey (1992, 2004, 2016)
1982 ~ Dog (1994, 2006, 2018)
and so on ...
Welcome to the site.

P.S. A list of all years and symbols ...
https://en.wikipedia.org/wiki/Chinese_zodiac

Thanks a lot!!