Yes but they were made only in the 1940 model year and consequently are incredibly rare - I know of three I think, one of which is in my collection.
Hilary Stone, Bristol, England
> I have seen a number of top tube shifters for SA three-speed hubs. I would
> like to know if such an accessory exists for four-speed hubs.
>
> Paul Patzkowsky Longmont, Colorado