This pack is play on words. Many people know of mainline steam and BR standards. The weirdest were the Pacifics and if you haven't figured out I'm talking about these: 71000 'Duke of Gloucester' (Express) 70000-70088 7MT Britannias (Express) 72000-72010 6MT Clan (Mixed) These are different because these were the only Pacifics and most of them were in BR Green. All have chime whistles. So let's get started: 71000 'Duke of Gloucester' Only one of it's class Caprotti Valve Gear Railtour Variant Top speed of 100 MPH BR Standard 7 'Britannia' 88 members 2 Preserved Walschaerts Valve Gear Railtour Variant "Britannia"&"Oliver Cromwell" Top Speed of 100 MPH BR Class 6 'Clan' 10 Members 0 Preserved 1 under construction Walschaerts valve gear Top Speed 75 MPH Used mainly in Scotland so this one is less likely until we have a 1960 Scottish route.
And very nice they would be too. Sure I had a N Gauge Britannia years ago, can’t remember who the manufacturer was. The advantage of doing some BR Standard Class steam locos Is they are a bit more flexible as to where they can operate.