Shifted Die Cut 2022 Booklet (#5658) Or Counterfeit?

I bought this on ebay a while back - I'm looking at it closely and wondering if it is genuine.

- Seller is "daveintc" - who appears to be a legitimate dealer with 7000+ items for sale.
- Presumably a block from a double-sided booklet of 20, Serpentine Die Cut 11 x 10 3/4, printed by Banknote Corporation of America
- The microprinting looks just like my genuine 5658.
- The printing fidelity matches my genuine reference.
- The sky color is a little brighter than my genuine 5658 - could just be normal variation
- There is nothing on the back - apparently the stamps/labels on the reverse were removed.
- There is a light impression of the SDC visible on the reverse where the cuts should be - probably for the cuts on the other side of the double-sided booklet.
- There is a "long hump" near the top of both sides and between the stamps - one on the left "points" down - middle and right ones "point" up. My genuine reference does not have this feature - this is the most curious feature of this block of stamps.

Any thoughts on this one?



[edited the title to be more correct - "shifted die cut" instead of "misperf"

Seems okay.

It appears to be a genuine Diecut shift, the horizontal and vertical diecuts are shifted down.
The long hump that you mention is where either the horizontal diecuts would cross, or in this case where the booklet pane is ordinarily cut.

Thank you!