You've got a wide range 4spd hub made in January of 47.
I don't think there is any more direct hub dating significance to the pat. date # 's.
I have to remind myself now and then that the hub dates only itself for certain and can mislead you on the date of mfg. for a bike.
Calvert Guthrie Kansas City
In a message dated 8/15/2001 11:26:35 PM Central Daylight Time,
> I have now just started scrutinizing the wonderful Seiber bike I got a month
> ago from list member John Barron (thanks John!) I will post pictures of
> bike later but take my word for it, it is very beautifully made...
> In any case, I am not an ace on Sturmey Archer so I wondered if anyone can
> clue me in.. The hub is a model "FW" and for markings on the chrome barrel
> has a 20 line list of patents stamped including those applicable in Great
> Britain, USA and Switzerland (all separately listed.) Then there is the
> Sturmey Archer logo with FW in part of it.. And below that logo to the left
> is stamped "47", then quite a bit of space and then "I". I would first
> assume that this is a 1947 hub but that seems hard to believe as the
> conditions is amazing.. Plus, the patent numbers are prefixed with what
> could be interpreted as a date and start with 47 and go to 54. I would
> guessed, before looking at any of this, that this is about a 1954
> Anybody know what is up here?