When you say new build, to my very untutored eye it appears very similar to 'Velinheli' at Launceston.
It is actually built to the same design as Dinorwic Quarry's No 1, No 2 (now Dolbadarn) and Michael.
How many variants of the "standard" Dinorwic Hunslett were there?
Loads! :lol:
Ignoring the very early "odd ones" (at Dinorwic)
Dinorwic had 2 types of Alice class
" " 3 examples of Port class (as listed earlier)
" " Lady Madcap
" " 2 Mills class (Jerry M & Cackler)
Penrhyn had Small class (very similar to Alice class)
" " Large Class
" " Port Class (not same as Din Port class)
" " Main line Class (Charles, Linda, Blanche)