One strange thing, There are repro quadrant shifters out there. I'm sure of this because I've seen a lot of a dozen for sale on ebay from China. I've never seen one in person and I can't be certain, but I doubt they would have embossed face plates like the originals. Today, things like this are commonly cast. The asking prices of early shifters are through the roof. I don't know if they are actually getting those prices though. $80? Good 3 or 4 but not even in good condition. edit: I have also seen on a different thread here an excellent copy of a headbadge made by 3D printing. I think that would be the most practical method for low volume. I don't think anybody would emboss brass plates like the originals. Also, look for the small circle with SA stamp. Not always there, but reassuring when it is.
https://www.ebay.com/itm/Sturmey-Arc...wAAOSwZb9d1c53