O Gauge 4-6-2 Brass Chassis

For sale is this O gauge loco chassis. I believe it is for a GCR 4-6-2 loco but it has no markings or information. It is well constructed out of 1.5mm brass and screwed together, not soldered. The frame spacers are made of square brass bar and there are brass bearings in the driving wheel holes, although not in the bogie truck. Just sitting gathering dust and it maybe of use to someone for the brass alone.