Is this a fake or a mistake? [opgelost]

1 Pound - Elizabeth II 3rd portrait; Celtic Cross year printed 1997... but only 1996 listed and no mention of this year?
It has a slight raise to the edge on the picture side so could be a fake... looking for some advice
Thank you

Bigger pictures would help!
Did you do a search on internet ? :
http://www.predecimal.com/forum/topic/10619-1-pound-1997/
http://blog.alism.com/fake-one-pound-coins-part-three/
(example 10)
http://thefakepoundcoindatabase.co.uk/FAKES/CROSS/CROSS35.html
http://www.thefakepoundcoindatabase.co.uk/FAKES/CROSS/CROSS21.html
http://thefakepoundcoindatabase.co.uk/FAKES/CROSS/CROSS8.html
....

It is a fake - the portrait does not look correct, like someone has re-created it.
Not shown in your pictures but an easy fake check is usually poor edge lettering.
Also like you said it is wrong date for that design, which is another sign it is fake.
Then sometimes alignment, where obverse is vertical and reverse is mis-aligned.

1996 https://en.numista.com/catalogue/pieces1390.html
2001 https://en.numista.com/catalogue/pieces1395.html

https://www.thespruce.com/chinese-coin-counterfeiting-ring-4071202

Citeer: "PetrusAscanus"​https://www.thespruce.com/chinese-coin-counterfeiting-ring-4071202

​Pretty crazy! Thanks for sharing.

Thank you so muchfor your help... It's been interesting following your links as well to educate my self on what to look out for. I'll keep the coin as an oddity in my collection but will indeed lable it as a fake.
Once again thank you