Question about an 1815 Brazil 20 reis

I looked this new purchase up in Krause and it seems that the 20 reis from this date range (KM#233 1802-1818) should have the denomination as XX. Other KM numbers have the denom as 20 but a different rev design, different date range too.
Is the Krause I used out of date? I'm I incapable of reading it? Is there anything you can tell me about my coin!
Also I have no idea on a grade or value for this piece. I know the pics aren't the best but I'd appreciate some help on that too.
Thanks in advance for the help!
Is the Krause I used out of date? I'm I incapable of reading it? Is there anything you can tell me about my coin!
Also I have no idea on a grade or value for this piece. I know the pics aren't the best but I'd appreciate some help on that too.
Thanks in advance for the help!
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Comments
http://reviews.ebay.com/History-of-the-money-in-Brazil-1-4_W0QQugidZ10000000003227848
which explained quite a bit.
I don't actually own a copy of the 19th Century Krause since I own so few coins from that century. I flicked through my local B&M's copy to find out the little, erroneous information I had. Would someone please do me the great kindness of looking up this coin and letting me know the KM number, mintage and approx value for the grade?
Both priced at $10VG $20F $75VF $100XF