5081 has different shaped balance weights on the driving axle compared with the other Castles. It looks like the arrangement used on 4023(?) - a Saint or Star or something? - Not too clear on the older GWR classes.
Great photos. Hope there's some more.
Dave.
An earlier Model Rail shot of Canton Mk1
Canton received its first hymeks in the summer of 1961. They were looked after in the carriage sheds and serviced in the DMU shed, I’ve never seen any pictures of them on the main running shed.
Canton Mk1 Canton mk2 ground cover
The placement of strewn tools are copies from actual pictures
Another recent Caerphilly out shopped engine
4037 a loco in my collection.