If the shirt is match worn by Beckham with a credible cerificate of authenticity (CoA) then it is worth £500-£800. If it is only a replica shirt then £150-£250 (if you have a CoA or photo of them with the shirt).
Yes david Beckham joined Real Madrid from Manchester united, after Ferguson threw a boot on David Beckham, it missed his eye.
Yes David Beckham has played for Manchester united before
David Beckham was 14 years old when he started playing for Manchester United.
Not officially. David Beckham was inadvertently "knighted" by an announcer when the Olympic flame was handed over to Britain. During the ceremony, the announcer referred to him twice as Sir David Beckham. He has not been officially knighted by the Queen.
David Beckham played football at Manchester United. Sir Alex Ferguson was David's manager. Sir Alex Ferguson taught David many things and put him in his first real game. Sir Alex Ferguson was a role model of David's because of this.
When Beckham was 16 he was drafted to the Manchester Youth Team.
Manchester Utd. he used to play as Right Midfielder till Ferguson sold him off to Real Madrid, to be replaced by Cristiano "Diver" Ronaldo.