[sera]

There’s a letter code. Look on the bottom of the rec’r. I think that code is on the Beretta forum here.

Perazzi has 2 bbl diameters for factory chokes. .724 and . .736. Trigger groups come several ways flat springs . Vs. Coil springs and selector or no selector.

 

[sera]

That’s an early type 4 gun. Meaning it has the self adjusting forearm iron.

Remember that all Perazzis start as an International trap gun. 2 shots per target. They added choke tubes to just the bottom bbl 1st and then top and bottom next. Selectors came later.

The gun at 45 years old looks okay.