They are not Cravens. They look nothing like them!
They are inaccurately repainted British Railways Mk 1 coaches. The shade of green, lining and "flying snail" CIE logo are the wrong shape, wrong way round, and wrong size.
The locomotive is not Irish either, nor like anything which ran here. The livery is farcical. Numerals are the wrong font, size and colour - which should be pale yellow. The logo is the wrong shape, size, and wrong way round. It, too, is the wrong colour. It should be pale green, lined in gold. (Not yellow either, as mistakes often show). Above all the locomotive should not be black! CIE painted their locomotives a dark grey all over.
As a toy, it's fine. As a model it's a disaster.
Incidentally, there's a salutary story behind the frequently-seen yellow snails on model loco tenders. Never, ever take livery details from preserved vehicles. Errors in accurate liveries are common. In Ireland they are endemic, with every single heritage group having wrongly painted at least some of what they've so carefully and painstakingly restored.
When the RPSI first restored two of its locomotives, (461 and 184) it gave them a black livery with a yellow snail. But the black and the yellow were inaccurate. Unfortunately, these have been propagated in many models, a bit like the zebra stripes of black ironwork on the otherwise beautifully restored GNR brake van at Whitehead. On almost all Irish wagons, ironwork colour matched the body colour, as did chassis colour.