Freight wagons Gbs produced by SGP

  • My friend writes an article about Austrian freight wagons type Gbs 151 0 (and 151 1, 2, so on) for polish railway fan magazine. 500 wagons of this type were sold to Polish Railways in eighties. I would like to know how many Gbs-es were produced, and eventually range of numbers on Austrian Railways for individual batches of production, because (I don't know exactly) these wagons probably were produced in batches in different years. I know that there were four different versions of these wagons, that differed of each other with extrusions on sidewalls under ventilation hatches. Photo presents Gbs with three flat extrusions, typical for PKP (Warszawa, 2014). These wagons were withdrawn from normal traffic PKP Cargo, this one is a mobile workshop.
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