Axle ID, Old Ford Gurus Wisdom Needed

Was given this axle yesterday. Mechanical brakes help me date it close but would like to know for sure.

 

close up

 

That is a model A axle with model A spring perches. It was set up for a wagon. That bolt and washer to the left of the spring perch in the close up shot should not be there. It is there to keep the wheels from turning.

 

Thanks Elrod, I don't know why I didn't recognize it as an A. Maybe the fat tires threw me. Picked it up last night in the dark and shot the pic this AM.