BR British Railways - Steam cabside numbering (approx 5.75mm high) for Gresley A3, Gresley A4, Peppercorn A1, Thompson A2/2, Thompson A2/1, Thompson A2/3 and Peppercorn A2 Classes with power classifications. First 3 digits in made-up format you add final 2 to complete your model. For early 'electric blue' painted A4s which carried mixed traffic lining and larger (12 inch) cabside numbers see ref FRH7024/60A.