Whose hopper cars were these?

Claus Schlund \(HGM\)

Hi List Members,
Whose hopper cars were these? Unique construction. It appears the reporting marks were painted out, leaving only the road number but no sign of the owning road. A 1936 date shows on the side of the car. Archbar trucks also help date the scene.
Thanks in advance
Claus Schlund

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