1987 Mark 1 covertible, Dark blue Karman, left hand drive

Hi,
I would like to sell my car but to be honest, not sure what to price it at! It is a Mark 1, dark blue, Karman, left-hand drive. I bought it in Brussels in 1997, it had one previous owner before me.
Its in good condition and has never failed me. It has 250 thousand kms on the clock. I have done all the MOT's on it since 1997, have replaced many parts over the years and fitted a new roof. It has just passed a new MOT.
I am happy to send photos etc for anyone who is interested.
Thanks!
Marina
marinadebrito@btinternet.com