There is a known 1735a (imperforate pair) and 1735b (vertical pair, imperforate horizontally) for that issue, with a italicized Scott Catalog value of $80 and $600. The reason for the italicized listings is that they are considered quite scarce and few transactions involving that stamp have been recorded. Once again, a scan or picture of the stamp would be helpful in order to determine if this is one of the actual items you are referring to.
An example of a 1735a imperforate pair is shown at this link (note their sale price is $55 v. the $80 catalog value for the item):
http://www.gradedstamps.com/gallery...search&all=Y
Posted 06/03/2012 11:33 pm
