For Sale: Ultra rare Pre-war Baines Gate Stayer (Track)

Perhaps you should have a little read-
http://www.classiclightweights.co.uk...baines-hs.html

Good point:

Classiclightweights says:

Frame Numbers
Between five and 15 were built per week pre-war with 95% or so being to the ‘Flying Gate’ design though conventional models were still available. Frame numbers it is believed started at about 100 and reached nearly 1000 before the war and to about 2000 when production ceased.

However, being a stayer - they might well have had alternative numbers.