I think the bike is 1937 because of the new style kneegrips (1937 - onwards) but the painted tank panel (ended 1937). The owner has fitted the new twistgrip, the original being a straight pull type. If you look at the inner end of the new twistgrip you can see the reatining rin (about 1/4" wide) which was used for the straight pull type. Incidentally, if someone needs one of these rings, I have rechromed original one - somewhere.
36 4G, 37 VH, 53 ex ISDT KHA (project), 54 KH(A), Healey 1000/4 (project)
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist once more - but not Machine Registrar.