I happened to see this odd vase attributed to T.Sarpaneva on ebay and looked closer, and I just advise everyone to check you spell foreign names and words correctly. Or that you know at least how they should be spelled when you read them. (when you see a signature on the bottom of a vase for example)
Well, of course this is handy so you avoid at least the grossest cons, but on the other hand if you are a decent reliable seller and your topic is "iitala" you might miss a buyer searching the ebay for "iittala". There are a few of those too I noticed.
PS. Humppila has 2 p:s, Riihimäki 2 i:s in the beginning, like Nuutajärvi 2 u:s.