1852 Spanish 1 Real [решено]

The image attached is for a 1852 1 Real Coin minted in 1852.  It is slightly different from the KM 598 and 606 images.  The bust of Isabel is different from those two.  Also it does not have stars to denote the mint , but does show S RD as mint marks.  Can anyone point me in the right direction for the country of origin??  I looked at Mexico, Costa Rica, Honduras, Peru, Bolivia, Columbia and Chile.  
Coin is 14.5 mm wide, approx. 0.7 mm thick, it is round and has a reeded edge.  I weighed it at 1.3 grams.

At 1852 Spain did not mint any coins for the south and central American countries anymore. So that coin is from Spain but I'm not sure - I don´t have any literature on coinage with me to check it but there might be other variants that are not added yet to the catalogue, so maybe another user can help you with that.

It is the Real mint in Seville (mint mark S), Spain.  
http://www.coindatabase.com/coin_detail_pesetas.php?cdb=R120016

Thank you for the great info on this 1852 1 Real coin.  I looked at your reference that had excellent info about the coin.  Does this coin have a KM  number?

There is no picture in Krause, but probably KM #518.4.  

I did look at KM 518.4.  I discounted it when I saw the weight at 3.3800 grams.  My coin is only 1.3 grams.
Thanks again for the help.