How Rare Is A Authentic Gordon Brown Autograph?

[brighton_4eva]

hi guys,
how rare would you say a gordon brown autograph is ? - signed in biro.
he sent it for my charity auction!
cheers - sam {thumb2}

[Shambler]

At this point, whilst he's in office...fairly rare, but there are some floating around from before he became P.M. Once he retires it'll be easy to obtain authentics from him, just as with Tony Blair now.