Note: The
ebay links in the original post will soon go dark unless screenshots are captured.
I was intrigued enough to look at some of Sewall718's listings. For the record, let's look at a couple of his other listings: a used Scott 295 pair:


titled:
Quote:
1902 US #295 pair - error stamp - "Underground Railroad" - used - perfect horiz
with a description of:
Quote:
1902 US #295 pair
- error stamps
- "Underground Railroad"
- used
- perfect horizontal centering at 100% Gem grade. Fantastic. Only stamp I own that has ever graded 100% in either dimension.
- 100% orignal gum on back, undisturbed and unhinged (despite being a cancelled stamp)
- lovely 9% of stamp is in the margins.
- crease in leftmost stamp not visible to the naked eye..
- Center perfs between the stamps at top are well attached but worn slightly.
- Great bright carmine color.
- Nominal cancellation
A stunning pair of #295s worthy of any great collection. Original gum feature and underground railroad are unique features, aside from being a lovely pair.
Apparently a slightly low train is now an "Underground Railroad" error? Crease "not visible to the naked eye". He needs to have his eyes examined! Touting gum on a used stamp?
To look at a second one of Sewall718's listings, a used Scott F1:



tited:
Quote:
1911 US #F1 Registration Stamp - Used - Rare Both Side Print
with the description of:
Quote:
1911 US #F1 Registration Stamp
- Used.
- Rare Both Side Printing. The double side printing is extraordinary as the gum side printing is from a completely different stamp!!! See pictures. The #F1 stamp sheet was placed against a wet stamp sheet of a completely different stamp. I have never seen this before in over 50 years of stamp collecting. The obverse side printing was clearly done before gum application (ie during the stamp production process) as otherwise the printing would have been lost once the stamp was used. An extraordinary item.
- stamp centering is shifted towards the upper left with perforations touching the edge of the stamp design.
- bend in upper left hand corner. Not visible to the naked eye.
- Selvage attached.
- Bethlehem, Pennsylvania cancellation.
So he is a third generation collector of over 50 years and has not seen set-off on an early 1900s US. Stamp before? Nor can his naked eye see the huge crease at the upper left!! And he has several other listings which demonstrate a near-total lack of understanding of basic beginner-level philately. Yes, time to shop with other sellers.