well I think the little rings makes them rare, what do you peeps think? or are they junk? http://www.shareapic.net/content.php?id=5142444
I can't view your post very well but here is a gallery link http://worldcoingallery.com/countries/coin.php?image=img9/121-421&desc=Mexico%20km421%205%20Centavos%20(1905-1914) est value of km 421 is 75 cents...
let see if this works my 5 centavos are from 1903 http://www.shareapic.net/content.php?id=5142444&owner=5centavos