This 4mm. finescale LMS Class 5XP “Jubilee” 4-6-0 locomotive fleet number 5687 “Neptune” in the straw-lined black livery was released by Mainlline in 1981 (cat. ref. 37095). This model had the Stanier 4000g. tender, the correct nameplate size, the re-profiled chimney with skirt mounting studs, and improved wheels. The model is particularly noted for being fitted with the Mk2 electronic steam + whistle sound, which is in good working order on this locomotive. The locomotive is in running order and good condition. The outer box is in average condition with a hole in the vision panel, whilst the inner tray is in good condition. The box contains the history/maintenance notes and the leaflet for operation of the electric steam-sound and whistle. The steamsound + whistle equipment is mounted in the tender (notes + illustrations on reverse of outer box). The whistle warning sign for positioning under the track is not present in the box.