Value of this 165 years old Pirkenhammer set

Hello!

Just bought it for a very small amount of money. I'm not into porcelains but i liked it and it was very cheap. First i thought it's 80-100 years old but made a little research and it turned out that it's an incomplete Christian Fischer Pirkenhammer set made between 1847 and 1856. 17 flat plates and 2 platters.
All are in excellent condition, except a tear on the smaller platter.
I have no idea how much does it worth and i don't want to sell it. I just would like to know its value because if it's an expensive one then i will keep them in a safer place.
When i got them in a very unprotected box, my oriental shorthair cat immediately pissed on them...
Sorry for my bad English.

 

When i got them in a box, my oriental shorthair cat immediately pissed them off... Really.

Your English is excellent but this bit may need revision.

"Pissed them off" means 'really badly annoyed them' or 'made them angry'

What you may mean is the cat pissed on them.

 

Thank you, afantiques!

 

Hang in there, Mango. Isn't English terrible? I've made more hilarious blunders than I can remember. Anywayyyyy, hola and welcome to the forums. I don't know ceramics, but there are plenty here who do! What a great find!

EDIT
I was learning a bit about your pieces and came across this history...
http://cfb.unh.edu/phycokey/Choices...ORY OF THE PORCELAIN FACTORY PIRKENHAMMER.htm

 

I really do not know a lot about these dishes. However, they are very beautiful and if they were mine, I would put them in a safe place. I would also use them, but carefully.