US Stamp Scott #573 Unfamiliar Perfins! Need Help

US Stamp Scott #573. Very curious to know what these perfins stand for. If you have any leads I would appreciate the entertainment.

Thanks

Please show us a scan from the front. Might be easier to view and offer an opinion. It appears the holes are missing from several stamps.

Looks like design C212 "CNB" for Chase National Bank.

JohnBecker....dont think CNB.
each HZ pair look different

This appears to be a contiguous block of eight with four different perfins. Why? Each perfin was used by a different organizations and even if one company had several different perfins they would never be used on the same stamps like this!

Here is the front. Thanks again guys for the help.

I took one of the perfin, made it a layer, changed the background color, made it semi-transparent, and reapplied it over the top of the other stamps.
As you can see , it pretty much fits all the other stamps minus some missing/bent pins. So my opinion is that it is the same company (CNB).

Note: the original image is skewed so the transparent layers might be slightly 'off' due to this, or it may be bend pins, or some combination.
Don

Thanks again everyone for your opinions. I appreciate it.