Only you can decide that Ben would be a shame to sell maybe , although you dont mention if any are worth much ?.
Made me think though the ten shilling note was withdrawn in the late sixties and the £1 note in 1983 and you can still find thousands of them .
Millions were printed just the same as the £1 coins out there now and the notes in circulation did not obviously last long.
Mid runs (with obvious exceptions) in circulated condition are not worth much more than the notes value 30/40 years ago.
Be lucky.
Pete.