How much is this stamp worth?

Question

I'm asking this for someone else, the following is all his:

My grandfather, gave me his stamp collection when he passed away... 10,000+ Stamps. Some from the 1800's. Just today i started looking at them, searching eBay, and that sort of thing.

Here's the first American stamp i found in eBay.

http://cgi.ebay.com/Scott-596-PSE-70-Used-1923-1c-US-Stamp_W0QQitemZ290076344475QQihZ019QQcategoryZ678QQrdZ1QQcmdZViewItem#ebayphotohosting
As you can see, worth $195,000USD. Maybe more. So, i turned to the American section of my grandfathers stamp book... and look what i found...

http://img182.imageshack.us/img182/4495/stamplj9.jpg
Here is a comparison shot - eBay stamp on the left, my stamp on the right:
http://img261.imageshack.us/img261/9021/compareqi9.jpg

So, how much is it worth if it is from New York instead of Kansas City?

Answer 1

No, it's not the fact that it's New York instead of Kansas City. Look at the comparison shot again. Now remember that these are printed on steel [maybe in those days it was copper] plates, so there's NO variation in the stamps coming from a single issue, unless it's literally an error. Those are known and cherished by collectors.

These are two different varieties, and one is far more common than the other. That's the main difference in price. The other thing is condition, and for stamps in that price range, the eBay connection (and buying by mail in any case) is about the integrity of the seller. Is it really exactly what they say? If not, how quickly will they make good on an inadvertent error?