Whoo Hoo! Welcome @Don McErlean to the "Cute but not terribly functional club! " LOL!
A fine example too ! As you pointed out the Red Britannia is a lot more common than the Green Variant , but they are out there .
I might use this opportunity for a bit of Brimtoy necromancy on the thread and post some of the wonderful Brimtoy I obtained from the Michael Foster auction of examples used in his marvellous books on British Trains
A "Cock of the North" rake in both passenger and freight !
And a 35a set in two variants ... One thing I loved about Brimtoy is they made differing versions to suit different pockets ... the front rake in this photo was a simple push train with no mechanism at all and the upper rake is a floor train version powered by clockwork for kiddies who didnt have track or as a cost effective toy if parents wanted to not have to pay for track 
All in excellent condition and the actual models appearing in his books .. honoured to have them
