Help with a Beretta O/U

[Phil Yearout]

I have a chance to buy this gun from my bro-in-laws estate - I've been wanting a gun for skeet and doubles trap. I don't know a heck of a lot about shotguns of any kind, but this one is way outa my scope of...whatever. It's a 12ga Beretta and we don't see any model or numbers indicated anywhere. I do know that his father-in-law bought it in Germany probably in the 60's or 70's. Condition is good/fine but I don't have it in hand and the only thing I have is some poor cell phone shots. The ask right now is $1100 but could get it for whatever I want to pay. But I don't want to rip my sis-in-law off if it's worth more, and yet I don't want to invest much more than that for myself. I know it's not much to go on but any thoughts, opinions, etc. appreciated...thanks!