Long before Mercedes made it the plutocrat / African diplomatic conveyance of choice, the Great Northern Railway of Ireland laid claim to the "S" classification to place on Glover's classic 4-4-0 design.
Decades later, a brass and nickel-silver kit was produced. Fairly hard to get hold of in those pre-Internet days, it was another couple of decades before a secondhand one, untouched as many kits are, was spotted on eBay and swiped for less than the cost of a Ryanair seat to Dublin.
Here it all is, to be built in Irish P4/21mm gauge. As a first stab, you'd want to be doing it more elegantly than a skanger in Ballyfermot:
It will be sixteen weeks before Irish axles arrive from Ultrascale and hopefully a lot less than that for P4-profiled wheels from AGW (Alan Gibson Workshop). There'll be working hornblocks to get from High Level, and we'll be trying to install the CSB suspension system. I absolutely hate worm gears, so one of the many Portescap RG4s in my drawer will probably find its way into the drivetrain.
Des at SSM e-mailed the missing instruction sheets this week and we're sort of set to go. The instructions suggest that you can build the body structures separately from the chassis, which is great 'cos the wheels and axles aren't here yet!
I'll be trying to portray no.171. I only model preserved stuff, on the basis that you can still go and see the thing.
A 21mm gauge layout in future? Now chance would be a fine thing (though Templot makes it easier) - more likely I'll seek permission to run on someone else's 21mm gauge.