Jim
I didn't see a pic of the frame showing the original serial number stamp, but if it's 2566 as we see on the fore iron, that serial number on the frame is 2566; which is consistent with the 4E grade designation in the records, and the Grade 4E engraving motif seen in the frame pics. Having the serial number from OOE barrels was clearly confusing; but I understand this is one gun showing two serial numbers, and not two separate guns. If not, then clearly I am the individual who is confused.