I think that this might be a VINTAGE RECLAIMED CAST IRON TRACK CHAIR, possibly narrow gauge, which could be a stand alone display piece or maybe an upcycle project as bicycle stand or even a door stop.

20x6x10.5cm wit faint traces of green and blue paint remaining.

It is UNMARKED which is why I am unsure of it’s provenance- I’m not a rail expert but I’m sure someone will correct me if I’ve gone down the wrong track.