Check the listing for details. USA #CVP84 invert error full sheet +regular sheet+2x #CVP84a error usages. Listed at 139.00 USD. USA #CVP84 "invert printed ERROR" sheet + many extras! This lot is for several items, all related (see scan, 1st row):1) #CVP84 "invert/upside-down printed ERROR" full mint sheet of 10 (bought on Feb. 4, 2012)--> Full sheet of invert printed stamps. This is easily discernible since the lower left margin (which contains the words "PitneyBowes" & "Mail & Go" are now obscured by the barcodes from the stamps. Compare this to: 2) #CVP84a, a regular printed sheet of 10 (the only difference between #CVP84 and #CVP84a is the word "Postcard" underneath the denomination). This sheet was bought on Jan. 21, 2012 from a different machine.Note --> On a regular sheet, the left selvedge only contains the pre-printed wording "PitneyBowes" & "Mail & Go", this is proved by: #3) A blank / unprinted sheet of #CVP84, which only contains "PitneyBowes" & "Mail & Go" and the die-cutting. To make this lot even better (see scan, 2nd row):#4 & #5 are two actually mailed versions of the #CVP84a invert error (bought on Feb. 8, 2012) on two postcards. They are the left & right stamps from Row 4 of the original sheet. #6 (see 2nd scan) is the remaining empty sheet of #CVP84a that was used for the mailing of the postcards (note: the white square in the middle of the scan is simply a post-it note attached to the back of the empty sheet with some notes). What happened? Well, the stack of unprinted sheets was accidentally flipped upside down by the Super Target store personnel (in Frisco, Texas, where this machine was installed) and this action, as a result, makes one then turn the stack of labels 180° in order to have the stamps print on the stamp side. This error existed for a couple of days; I bought some on February 4 & 8, 2012 (which is why the mint error sheet is from Feb. 4, while the used error stamps on the postcards are from Feb. 8). The result is that one almost doesn't notice the inverted error printing, except that for the right column of stamps, the barcode is now on the selvedge and those stamps have the barcode that belongs to the stamps on the left column, which in turn have NO barcodes! In order to test what (if anything) would happen if I actually use these error stamps as postage, I mailed myself (and one other person) all 10 stamps on various postcards. All postcards were hand-cancelled at the post office of mailing, where nothing was noticed. The cards then were sent to the North Texas mail processing facility where they received the gray Postnet codes seen at the bottom. No one noticed that one stamp did not have a barcode! .. nor that the other one had the barcode on the left instead of right side! This is a fantastic lot for the specialist (of either ERROR stamps and/or postal history!). Would be part of a great exhibit (which is how I used some of these myself) ! It is my understanding that of the few Mail & Go machines that were operating (after the failure of the Super Target trials), that this program is now shuttered by Pitney Bowes and machines are no longer available anywhere, as such, it is now no longer possible to get these stamps (ie: #CVP84 and varieties). Note: the other remaining 8 mailed (& returned) postcards remain in my own collection and exhibit (I can send you a link to the PDF file that contains the 16-page exhibit about the Mail & Go stamps, called "The Super Target Mail & Go DFW Trials" that I created back in 2012-2014 and was shown at TEXPEX - silver award - and at the Mid-Cities Stamp Club annual shows - gold award.) I will only mail via insured & tracked Priority Mail due to value & scarcity (the shipping cost will include the extra USPS insurance cost). Foreign shipments are only possible via eBay's "Global Shipping Center" to make sure that the item is tracked and insured until it reaches you.