Imperforated 720 Proofs?

Can someone please give me some info on these imperf #720's? The margins and frame overlap absolutely cannot be trimmed 721/722 etc. The only thing I have fopund after exhaustive research is that they are 720p singles (proofs)and are quite rare. If anyone has any other experience with these please let me know-Thanks

I think the $75 asking price for the top one is a tad too high. Also note that the seller has only 9 sales under their belt so I am not sure of the sellers level of expertise. I'm not by a catalog to check the CV so hopefully someone will chime in that knows of these or if they're even scarce.

*Edit* I just saw the sellers image of the entire sheet which does look to be imperforate. Could it be a straddle margin ?

cut from a normal booklet pane with large margins...

does the proof sheet shown in the listing have any connection to the item?

Not really. Scott specialized only lists the 720 in a large die, this one is not a large die. The sheet shown in the sellers auction is something to wonder about, but it might just be my eyes but I see no perforations on that sheet.

http://www.ebay.com/itm/Scott-720P-...em3f2198e420

The proof sheet that is shown is the one that was approved by the Bureau in 1932 when the stamp was issued. I am 99% positive that it is still in the Bureau records or possibly in the National Postal museum.

I am not stating I am an expert. I am asking opinions on if this is a trimmed 720-722 or is it a perf. No, Im not an expert, but it cannot be a trimmed booklet because there are no perfs between framelines of of continuance of frames. There would be perfs inbetween the two different frames correct? I added the sheet from an online pic to show that this is the ONLY imperfs I have ever found for this specimen. I state that I am not absoluite on it being a 720p

I would appreciatte someone to send an image of a booklet pane #720 with even close as wide margins to these. I have pondered hundreds of these 720 panes and NEVER have I seen one with 3/4 size of these margins

It would almost have to be from a booklet as it can't be a proof. Only Large Die proofs exist in this stamp. The seller even claims not to know what it is. I highly doubt that this is from perhaps the only sheet of imperforates so the only thing left is to send it in for certification.

The sheet shown is a certified plate proof for a 170 subject rotary coil (Scott 721). The sheet is indeed in the national postal museum.

Here is an image of a wide mis-cut 720 pane