the worst thing is going to be finding a person whos after this for its history, not for using it in the future so much. its like an antique of a marker and will be hard to find a buyer. if somebody is after a first marker, this is definitely not for you, unless ya loaded. coz ya can go out there and find a cocker for 150 quid if ya lucky.
a marker such as this, can be worth god knows how much if you find the right buyer. i would guess at plenty more than what your asking now.