I Have A Difficult One..anyone Familiar With 3c Banknotes?

I got these about 8 years ago. They been gathering dust in the closet since. They were part of a much larger lot in old envelopes. There were about a thousand all loose..but there were 3 that were bundles tied with old string. Looked as if they haven't been touched. It is where I found these ones. I don't know too much about them other than what I've read and its still a mystery to me. I'd like to hear what you think and to get a 2nd opinion on their identification. I do have more with grills and they are unlike grills I've seen. Some type of roller that leaves lines. Anyways here they are.

1



1a



2



2a



3



3a



4



4a



5



5a

That last one is pretty neat. George Washington going down an escalator.

#1 Re-engraved Scott 207
#2, 3 American Scott 184
#4 Inclined to believe that this is Continental Scott 156
#5 Scott 156, When the stamps were printed a thin paper was placed between the sheets to prevent the back from offsetting. Yor example clearly shows the edge of the sheet, very nice.

Hmmmm I wonder if any of these could be a special printing? Although they were not used postally but according to some..some where. And most were cut using a scissors. I don't know whether they were cut while still on an envelope?. But they all came off paper. There are still around 200 or so that haven't shown themselves. Also I found that offset in one of those bundles there is the possibility that they were totally unchecked. Or bundled by someone who is not a collector. I've only seen one offset of the 3c so far. Others I'm sure are still out there. The mysteries remain.

Stampnut, Most of all of these stamps-special printings or not- was cut with scissors. Just typical for the time period. I also recall that the special printings were issued without gum and on a hard white paper. I doubt someone just happening upon one as they almost definitely would be accompanied by a cert and they are few and far between.