This is not a counterfeit. It is merely a brand new knife made for Parker Knife Collector Services, and marked with one of the 50 or so old brands that belong to Parker (plus a few other brands that he uses which do not belong to him). It is not a copy of any actual old knife, so it is not a counterfeit -- but one might properly call it a fantasy item.
This seller only sells new Parker knives like this. He calls them old, because his customers want to buy old knives that look new, without paying antique prices for actual old knives that look new.
If you click on his AboutMe link, you will see a nice photo of him receiving an award from Parker, for selling so many Parker knives.
Meg Whitman, president of eBay, admires sellers like this. Note his exemplary standing with eBay. She strongly believes that collectors should not worry about age and authenticity, but rather should just keep bidding on eBay. Maybe she is right. Anyone who cannot recognize that this is a new knife, does not deserve to have any old ones.
Most of the new Parker knives are made by Olbertz in Solingen. However this knife looks very much like a Utica.
BRL...