Hi there,
I think you'll find that what you have is a pukka chart as used by BA for their trans-Atlantic operations. I recall we were chuffed to be asked to produce them considering that BA had their own charting division (AERAD). We asked them to sign a few of the originals, one of which was our centrepiece at Farnborough that year. We had a posh rosette printed with the date of the first commercial flight and the chart was suitably framed. A twin was presented to the BA Ops Director at the close of Concorde operations.
I still have a few of the final editions we supplied in March 1997, prior to AERAD taking over the job.
BA may have given away surplus stock as amended charts were produced, but there were never any made particularly for that purpose.
The original was the BA(HI)5, which changed in time to BAW(HI)5. It is depicted inside the front and back covers of Chris Orlebar's excellent book 'The Concorde Story' celebrating ten years of service in 1986.
Best regards,
atb