1857 France 10 centimes grade?

My son came across this semi-key date 10 centimes and was curious about the grade. We both put it at F12 (catalog value of $18). Thoughts?

 

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eBay auctions put it at about $6

 

More concerned with the grade than the selling price. It'll go in the boy's binder but we try to label as accurately as we can.

 

I see. I am not a grade judge of grade tbh

 

F-12 seems about right.

 

Searching through cgb's site is usually pretty useful. You can search for this coin, by grade, and find many at lower and higher quality than yours. Here's an example that seems very close, to me, at TB(fine)-20:

http://www.cgb.fr/dix-centimes-napoleon-iii-tete-nue-1855-rouen-f-133-20-tb20,fmd_077502,a.html

 

Thanks for ththe link...will need to brush up on my French (I know how to ask for a glass of wine...).
Really informative site.