Jenny Invert $2 reprint FDCs.
All addressed items genuinely passed through the mailstream.
Where pairs appear, one is the perforated version and the other is the imperforate (no die cut) version.
Lower two stamps are first day of use of two stamps produced using the USPS test allowing images to be stored and printed on blank labels from Stamps.com using certain secure models of Hewlett Packard printers.
Imperforate sheetlet
Left hand stamp is computer postage generated under a trial program using certain controlled Hewlett Packard printer models.
Perforate right hand, imperf left hand stamp.
Same as above
P&I - brown background shows cover the USPS inserted in protective cellophane - bard code is on the outside of the cellophane.
Gutter imperforate
Hand stamped FD mark at left, printed "postmark" at right (imperf at left)
Similar to top image
Gutter pairs P&I
Gutter pairs P&I
Cross gutter block of 4 imperforate
Cross gutter block of 4 perforate