Red Bull Max 1 Cap Signed by Max Verstappen. Signed in silver pen by Max Verstappen. What an opportunity for any fan of Red Bull Racing, of the awesomely talented young Belgian-Dutch driver a signed piece of Red Bull merchandise. At the 2015 Australian Grand Prix, when he was aged 17 years, 166 days, he became the youngest driver to compete in Formula One. Complete with Certificate of Authenticity. Speedy dispatch using Parcelforce 24 Hour fully tracked and insured service. We pride ourselves on our customer service. We are true F1 fans and years of experience in sourcing collectors ...