A class has 2 variants (shells) - pre/post rebuilding and 3 liveries for each (6 liveries; Silver,Green,Black,Black/Tan,Supertrain,IR), 2 numbers for each model - 12 models
C class has 2 variants (shells) - pre/post rebuilding and 3 liveries for each (6 liveries; Silver,Green,Black,Black/Tan,Supertrain,NIR), 2 numbers for each model - 12 models
121 - depends how realistic you want your model to be, as delivered condition is quite different to black/tan with all the modifications that went on. The 121's initially ran with no walk way handrails among other things. 2 variants with 5 liveries; Grey/Yellow,Black/Tan,Supertrain,IR,IE, 2 of each - 10 models. All would be motorised too, DCC allows double heading, or decent analogue controllers. Nobody moaned about all the 141/181's being motorised when they frequently ran as pairs.
Will your crowdfunding get you 1 model (variant) or 2? Also if 200 people on here are mad keen for it, yet a batch of 200 MM 071's are struggling to leave the shelves, this forum is not an indication of the demographic... Its why, as already stated the Murphys 121 model is pending, and will continue to for a while....