Stan,
The gun you shot was made in 1976. At that time, Perazzi was importing to America both through Ithaca and Winchester. I agree with you about how a Perazzi moves. To me, they almost feel organic. There is a good reason that a large majority of international competition shooters use Perazzis.
I do not know what the ACCIAIC SPECIAL engraved on the gun means. Maybe someone else can enlighten us.
Enjoy the gun. Don't worry about the chokes. When Digweed won the recent all around shotgun challenge, I am told he used the same gun with 32" barrels and M/F chokes for all events, including skeet.
Regards, Jake