This looks to me as if it's one of the early Tri-ang locos made in cellulose acetate, rather than the later polystyrene. I fancy the actual conversion to an open-cab loco was probably reasonable for its time, but it's probably since been stored in a warm loft and the acetate has warped, not helped by the loss of structural integrity brought about by the conversion.So agreed, fit only for spares/the bin now.