|The "Ivat" Stanier Black Five at Yatton|
I looked up the loco on Google It seems that when the black fives were designed by Stanier they all had small coal bunkers following the 'Midland' designers of the LMS combine.
Ideal for shifting coal trains and local traffic, but not so useful for long hauls. Then Ivat designed a cut off to the bunker and added a tender making them a good long distance runner.
I think I should have cloned out that intrusive arm, however it doesn't really matter on this pic.