Still looking for anything that resembles what it might be, and I agree there are similar coins but not facing the right way or exactly the same images - so far. I found a page, below, that says the second image above may either be Caesar or Mars. Also it has a longer lettering below the chariot - the one below has lettering L·IVLI·L·F on it. So it is not like yours, just it has some information. Click to enlarge ...
P.S. Also found this site with lots of similar images (across 8 pages) on it ...
http://www.tantaluscoins.com/browse.php?type=5&page=3&cur=1
P.P.S. On that site -
the winged helmet image is given Roma name
the chariot with 2 horses is called a biga (3 = triga, 4 = quadriga)
the chariot rider given Victory or Sol or Pax or Juno Regina name, and a few others.