Let's see if I can add a link. http://multicollec.net/1-mo/2c/1-02c.php, don't know how to make it link, but you can copy the url..
There are several coins on here that closely resemble your drawing. Starting with the 3rd coin down the list of Louis XIII, the coins are "cuivre", copper or in some cases may mean brass.
1610-1643.
Continue down the list to other kings, some resemble your coin also.
"Cuivre" is copper and the DB could be"DE", meaning "of"
Going down the list the Bourbons appear with similar coins.
I think you got a really old coin. What country did you find it in?
You made an excellent drawing.
Hope this helps. I could be all wet and it could be a decoder token from a Crackerjacks box.
Musketeer
Dang, the link worked.