Hi all
Ken suggests :
"I saw one listing strongly suggesting that
Fulton planes are really good quality stuff. Now, we
know that Fulton planes were made by lots of good
makers, including my beloved Millers Falls. But good
gracious people - it was the lowest of the three lines
sold by Sears, or at least the lower of the two before
Dunlap got invented by Mr. Dunlap of the Marketing
Department to fill a niche."

Every bit of printed matter I have suggests that all Sears planes
were marked "Fulton" at least for the early years (at least until the 1920's 
or later) and were made by Sargent. And although I am certainly much more a 
collector than user I believe that the early Sargent bench planes were solid, 
quality tools.
I guess what I am saying is that I would not write off anything with Fulton
on the label as second quality. And yes there are many Fulton marked planes 
that
are better left behind.
Regards
Chuck Zitur
Billings, MT