(Price check) KM #130 1855F Bolivian 4S CRUDE

Hi there, I have found a couple of coins at my grandmothers attic. The first one is the one from the topic title.
 I was looking through the internet coins at similar condition, but I couldn't. Prices of this coin are about 250+ dollars http://www.ebay.com/itm/BOLIVIA-1855-PAZ-F-4-Soles-Choice-AU-/291532568871?hash=item43e0b1f927.
In my opinion mine coin is in better condition, with quite nice toning, and good looking details comparing to ebay one. At the rant of money you can see AYACUCHO 1824 and star."  At the reverse of coin you can see black colour.
Could I clean it to rise value of Sol? I am wondering how much is it worth, and is  grading this coin is worth of money. Please, help me.

IMAGE URL http://oi62.tinypic.com/28rh6qb.jpg

PS How about HA auctions and their charges for selling an item ? Is it worth to do it if I'll grade that coin?

 Welcome to the site.  
This site below has coin prices ...
http://www.ngccoin.com/price-guide/world/

Cleaning would not rise the prize, it would reduce it, so don't do that!
To find out realistic prizes it's better to look for sold items because often sellers demand prizes that are very high but nobody will buy it at this prize.

Hi DonChori :bowdown:
Thank ypu for reply,
I am very interested in value of this coin. Was looking at NGC auctions at Heritage, but didn't found out the same as mine in similar condition. Do you know if ill send this coin to be graded at NGC, they will decrease a grade in case of this black mark? Or they will not certify it. Which grade is this coin?

The grade is about VF+ in my opinion, costs about 20 Euro, it's not worth send it somewhere to grade the coin but it is a nice coin! The black spot is not very nice but if you clean it it will be worse- even if you can get rid of the black colour on this spot it will definitely have an other colour than the rest of the coin after that, so it's better to leave it like this.