If I remember correctly, the only revision difference in plain A & SA was the auto sharp feature.
What it the part number cast onto your jug base flange?, that looks like an early 11563 model. Have seen three different cylinders 5300-11564, 11563 & 11525.
The jugs were all the same bore size & will interchange, but may require plugging the decomp up & finding the correct tin muffler assembly in order to reuse it.
Not sure if the SA revision covered all the other changes like elimination of the points & decomp hole, a different tin muffler can & added the rear cylinder boss mount style.