Even though the British invented the low-profile over-under shotgun (Boss & Co,. 1909), it was the Italians made them affordable enough for a mass market. Beretta started down this path in 1935 when they started selling their SO-series sidelock O/Us.
They followed this effort up in 1949 with a more affordable boxlock version – the ASEs. Later the company introduced their BL-line of boxlock O/Us, and made their lightweight, low profile design available to much wider audience. The BLs came in grades from the BL-1 to the BL-5, and they were the kind of shotguns that introduced thousands of shooters to the benefits and quality of Italian O/Us.
P. Beretta-gardone Vt Model BL-5 20 Gauge Over/under Shotgun: P. BERETTA-GARDONE VT MODEL BL-5 20 GAUGE OVER/UNDER SHOTGUN, HIGHLY ENGRAVED SINGLE SELECTIVE EJECTORS, 28″ BARREL MODIFIED/FULL VENT RIB – 80% CONDITION ESTIMATE=$1000-2000