The TRIANG R50 4-6-2 PRINCESS PLAIN CON ROD SET is a vintage model railway accessory made of pressed steel in silver colour. It is compatible with Tri-ang brand trains, specifically the R50 model, and is unassembled as a kit. Manufactured in 1956 in the United Kingdom during the British Railways Steam Era, this con rod set is a unit designed for analogue control systems in OO gauge railways. It is a rare and sought-after piece for collectors of model railways and train enthusiasts.