Pocatello Idaho -- What Is This?

Hi -- This came in a batch from a very reputable Precancel dealer whom I shall not name! But I can't identify it, so is it fake, etc?

Thanks.

Why did you not ask him/her???

edited for spelling

It is odd looking. Begins in the left margin, is partialy broken under the 1624 ribbon, curves down into the vignette, breaks again through the right arch of the label and the 1924 ribbon to continue brokenly off the right margin. The letters PO lean towards each other at their tops in each instance.

It is in the fakes catalog with this lengthy commentary - they are common weeds:
Fake
Old Type 3
Listed 1925 through 1930 as type 3 on the Black Harding. After that the information is hazy. Deleted because of its appearance on a number of stamps, often already postcanceled, it has been touted as a provisional and a fake. The continued use of the 461 during this entire period would indicate that this device was not in the post office.
Inverts, doubles, ups and downs are common. High values usually are postcanceled. The range of issues with this item is awesome, unless someone faked the fake!
Note on the 1¢ Defense that the impressions do not fall on the stamps.
One collection has about 38 different stamps, plus positions and colors.
Based on the block of four this looks like a two-subject "device."
Known on:
1914: 2
1914 Dues: 5
1917: 2, 5, 7, 10, 12, 13, 15, 20, 50
1917 Dues: ½, 1, 2
Offsets: 2, 3
1919: 1 10x10
1922: ½, 1, 1½, 2, 3, 5, 8, 12, 17, 20, 30, 50, $1
1923: 1½, 2
1926: ½, 1, 2?, 5, 7, 10?, 20, 25
Black Harding: p11
Walloon: 1, 2
Liberty Bell
Prexys: 3
Defense: 1

Here is what is in the catalog-"The Precancel Society's Town and Type Catalog of the United States and Territories"

I has been kicked out of the standard precancel catalogs for 75 years.

It is certainly no bad reflection on the precancel dealer. They show up all the time in collections and batches. They are conversation starters, fun, and collectable.

Thanks everyone -- I didn't approach the dealer because it's not that big of an issue and I don't want to offend when I really just wanted the info.

The catalog I have is dated 1976