KDGS,
I have an early 1946 S3 with game scene engraving and rose and scroll. It has a small AB on the trigger plate which I suspect is for A. Baglioni. I had been looking for his engraving only as a curiosity when I ended up with a 1953 EL and an SO4,three barrel set. The fact you have an early game scene engraved by him makes me feel more secure in my assumption on the S3 being by him. It is amazing that he did the SO4 when he was 71 years old and the 1946 S3 at 54. He had a long life. This paticular history is always of interest to me. It will probably bore others to sleep.
Thanks,
Ron