MASON IRONSTONE PITCHERS - WAY TO TELL IF REAL OR KNOCK OFFS?

Hi all,
I found these 2 Mason Ironstone pitchers at a yard sale over the week-end. But when I looked up what they sell for on eBay the prices are anywhere from $25 - $200!
How can I tell if these are real of copies & their value?
The large one has discoloration where the handle meets the body - but if you look down the handle on that picture you can see the red paint dabs are real paint & not transfer; so I think that one at least is hand painted?
Also, there are matching scenes on the pitchers but the stamps on the bottom are different/different colors?
Thanks all; I appreciate any help.

 

Look real enough to me.

 

And me. Different time periods, so different stamps, hand embellished transfer ware.

 

Believe that is Mason's Pagota pattern.
1890s?

Scroll down to find your marks
http://www.janicepaull.com/xmark/marks.htm

 

Part of the variation in price is due to how realistic the expectations of the sellers is. Look at completed auctions to get a better sense for what they can be sold there for. Condition is also very important.