Keyser K's Kitbuilt : GWR Siphon F Bogie Milk/ Parcels Van No.1544 - GW Brown. Unknown Maker Kitbuilt : GWR Dia.O.10 Siphon G Bogie Milk/ Parcels Van No.1478 - GW Brown. Three Variations of the Siphon G were produced by the GWR (Diagrams O.10, O.22 and O.33) with significantly different exterior designs.
