Is My Banknote Worth Anything

[pulmicort1415]

I have a Danske Bank (N. Ireland) £20 note.

The one with the tractor on front and part of City Hall on rear.

On the front of the note, which is in mint condition, there is a red rectangle covering the 20. Printed.

Has it any value greater than £20

[sandyRoe]

Why would you think it has added value?

[pulmicort1415]

Sorry should have stayed the red is in the top left corner of front of note

[pulmicort1415]

Because it's misprint?

[sandyRoe]

A while ago the Ulster Bank issued a £5 note with the image of George Best on it.  For a short time you could sell them for six or seven pounds.  

I still can't see why your note should be worth more than its face value.

[Buenchico]

There are plenty of people who think that misprinted Danske notes are worth something on eBay, e.g. https://www.ebay.co.uk/itm/224208507261
but it's unclear as to whether they ever get any buyers for what they're offering.

[jno]

errors can indeed be valuable. But you might need to research how it happened, how many of them there are, and what they've sold for in the past.

https://colin-narbeth.com/collections/errors-english