Well that's definitely cleared up a few things, thanks again safeman and Gary for all you've added on this- so the Progress G's were tops after all...

Door furniture cast in Phosphor bronze, wow how times change, these days few manufacturers will stretch to using PB even for critical points like the bearings for the hinges!
And, they think their handles and escutcheons are real quality if they're die-cast zinc instead of injection moulded plastic!!