We experimented with various media to match original colour and superficially repair the damage, but this proved to be too difficult to achieve, not surprisingly as the printed medium has a distinct texture and process.
The original was a printed poster designed for the London Underground. The poster’s design team had proposed it as an example of a new corporate image for the National Portrait Gallery, subsequently adapted and current to this day. The exhibition advertised in the poster never existed, it was just a proposal for the new corporate image, so there was no possibility to obtain another copy.