Phil,
Reference Wild Geese, exactly the same, there are small anomalies on each Regimental badge they produced for the film, so the viewer would accept it was the correct badge worn at first glance.
Take for instance the Parachute Regiment badge worn by Hardy Kruger or those by Burton the Crowns are'nt relevent to HM The Queen 1953 on, and one assumes they also knew of the copyright laws!!
Also Roger Moore as a supposedly ex Irish Guards Officer his badge would be woven gold wire not a silver cap badge as an Officer!