of manufacture uncertain, believed to be 1922. Seat tube 20"
centre to top. Top Tube centre to centre 22"
rims, 'Ambra Superca London Factories'
on BSA hubs
BSA inch-pitch 22-tooth
Deep-drop track bars
bright parts nickel plated as original, finish as per catalogue Garnet
3/6d extra. (17½ new pence). The model advertised in 1924
catalogue had 'struts' between the twin down tubes, it is assumed to
stiffen the bottom bracket area.