This must go back to them producing more prints than they needed, the backdoor prints. If an edition of 400 actually had only 400 prints produced (plus the 5% APs or whatever) this wouldn't happen. Produce extra prints, have them lying around the shop, number them as they were sold them this stuff is bound to happen. I used to bitch about this regularly on here- the integrity of the edition should have come before replacing damaged prints (months after it was in the owners possession in a couple cases).
I personally would rather a typical print without the pencil scratch letters by someone that wasn't the artist.
Just sayin.....

I think in the early days their record keeping was piss poor, so as prints started to arrive for authentication they used PC to correct their records. They used to provide a spare from low down in the edition numbers which they kept for any duplication but I guess that these have been used / sold.

The artist didn't number all the prints even back in the day

Anyone ever remember walking into the old POW and seeing the stacks of over prints, hundreds of sold out editions piled up everywhere in those dirty racks.

Ha I'd like that!

I'm saying I wouldn't want a POW employee adding letters and numbers to my print 10 years after production anymore than I would want my next door neighbor to do it.
Original numbering of the edition aside.

Starts getting silly when no one knows how many double, or even triple numbers there are out there.

That'd leave me to believe that the print they returned was not the print initially purchased

Very interesting thread.

Who knows but they are large editions and it's only due to the value that it's become important now...

It's easy to say now, 11 years later. At the time I get the impression that it was all just mates having a laugh and knocking some prints out. Im really not surprised the numbers all got messed up and as above it didn't matter at the time, only matters now as they are so valuable.

It certainly does not make it an AP, and DN, whats all that about? equals admission of cockup. That said at least you have COA.

Tis a cock up but seeing as PC are the official authentication body and the coa says AP it will be considered an AP by the market,  are the extended AP versions of liita, hc, LN etc any different? 69 LN APs which are no different to the signed edition doesnt make much sense, the best APs for me are the ones that vary in format/colour etc from the standard signed edition. I cant really see another way pc could have handled this tbh

The whole point of a PP/AP is surely for experimentation, and tuning to get the final run accepted and agreed by the artist, hence the different colourways,slight style change etc. Printers will always produce an extra percentage for errors as more cost effective to print more than not enough, these are normally signed when the run is being signed.
I too love the Banksy APs, especially the colourways we don't often see; however, Sticking AP on a print years after they realise they cocked up is not an AP IMO. Then again what do I know.