Is This Worth The Buck I Paid For It At The Flea Market?

Comparison to the known invert pane is useful if you want to know if your invert came from that pane.

There is always a very very minute possibility that the stamp could have come from a previously unknown invert pane.

Which is why an expertizer would examine the stamp independent of the known inverts.

Did you scan the 1st picture you posted? If so, then simply scan the stamp area at 300-600dpi. That would be significant enough resolution to at least look for seams or "printing" irregularities.

Any confirmation would have to be done by physical examination by an expertizer.

Even if it were a fake, a very good fake would be most likely worth more than $1.

Is it a common cancel of the day?

Well! After looking at the new images my comment above is dead in the water.

Looking with much magnification I can not see any cut marks corners or anywhere. To me for it to be a fake it would have to have been printed.

If it a fake or not you have something Timm . As it looks to me that the stamp would of been changed before it was mailed.

Hi Timm

You can take a scan but what sort of DPI can you get? Can you reach 1200 DPI? Is your current scan at 400 DPI? What sort of a scanner are you using?

So many questions.

Hi Timm

If the centre of that stamp has not been cut out and reassembled in the inverted position, you have a previously unrecorded copy of a great rarity. I know several people (myself included) who have manufactured this error and mailed to themselves just for the fun of having a fake!

If the centre has not been cut, the postcard should be sent to the Greene Foundation for expertizing and certification.

In 2009, Charles J.G. Verge, FRPSC, FRPSL wrote a book entitled THE 1959 ST. LAWRENCE SEAWAY JOINT ISSUE AND ITS INVERT that was published by the Greene Foundation. The book is 208 pages in colour

This is a good book and can be recommended as well worth the money. Order from the Greene Foundation either online or by phone. Details are on the website.

GJP

In my opinion, even if it turns out to be a fake of some sort, it appears to be a genuine postal use to me, which would make it worth more than $1 just for the novelty aspect. But I really hope it's genuine. That would be so cool and give others hope that there are still rarities to be found.