Macca's quite right. Alan Mann. But it took me a while to recognise him!
The photo is interesting. Presumably, Jon, you know the cup to be Belgian Touring Car Championship Trophy? And Jacky certainly won the championship that year, but driving a variety of cars: a BMW in the Spa 24 Hours, a works Lotus-Cortina, and Alan Mann's Mustang. I can make out 'Ford Mustang' towards the bottom of the trophy, and '......Europe' at the top. Is that 'Champion des Marques' across the middle? '3ème position'?
I wonder whether it's a trophy rewarding the Mustang's results in the ETC, in another championship, or in a specific race. Presumably it could be a Belgian Touring Car Championship Trophy, celebrating Alan's Mustang rather than Jacky's driving.