I had a 20 guage Zoli O/U that I bought used back in the early 1980s. It was a double-triggered gun (why I bought it) with a case-colored reciever, extractors, solid chokes, 3" chambers (has an Italian 20 been made with standard chambers within living memory?), vent rib, and plain wood. I used it as a rainy day gun for several seasons, and remember a couple of memorable hunts including one where I made a rare (for me) double on chukars in a box canyon in Asotin County, Washington. It seemed to me a solid, fairly light, workmanlike gun. Mine had considerable cast-off for a right handed shooter, which worked fine. Gun went into a down payment on a house, along with a pair of Zoli 20 guage SxS "Silver Hawks" that I liked even better and a bunch of other lamented hardware.... I think that the model name of the O/U was Golden Hawk or Golden Falcon or something like that. I paid $275 for it all those years ago, so $420 doesn't seem out of line.
