[Diamond]

McCartney is a left-handed bass player, as shown below. The picture you posted shows the subject playing bass right-handed. Either McCartney is ambidextrous or your picture is reversed from the original.

Also, I don't know what it means, but McCartney still has his head in this picture.

Cordially,

[Revolting cat!]

A left hander would hold a cigarette in his... left hand!