Well, I'm surprised the pedals were different for the two types of full-width hubs. Maybe Julian (or someone) could explain why they should be.
My pedal is for a '57 A7 with Ariel hub. I don't know what the casting number is because it's apparently covered in powder coat. (There's a lot I didn't know about powder coat before I had it done. I knew about protecting holes and threads, but have a feeling there are surprises in store.)
Anyway, for photos (using my A10), I tried to position the pedal at the SA spindle hole, despite my LH rod pull pedal being sort'a in the way. My A10 is registered '55, but has a '60 frame that I've modified for rod pull. All that said, here are the photos.
Richard L.