Fiat Uno chassis codes:
[146] should be for European 1a serie (1983-89)
[146A] for European 2a serie and Innocenti Mille Clip (1989-ownwards)
[146E] for Brazilian MkI Uno/Fiat Mille/Innocenti Mille (a different car than the EU ones, with Fiat 147 chassis: model origin should be Brazil)
[146B] for Duna/Premio/Elba/Penny