Maybe 300
All depends on the model and condition.
100-2000 USD
$100 - 140, depending on condition.
It's worth exactly what someone is willing to pay you for it. To get an estimate, post a picture to the forums at shotgunworld.com http://www.shotgunworld.com/bbs/viewforum.php?f=5
The Franchi Luigi SpA 48 AL 20 gauge in fair condition is valued at $600.?æ In good condition, it is valued at $800.
1898 a 3066 brescia
100.00dollars
Used 12 gauge model 48s in good to very good condition advertised in the $200-$300 range in Canada.
280$
That model name does not show up in the books. Your best bet is to take the gun to a gunsmith for professional appraisal since the model and condition of the gun will significantly affect the value.
Imppossible to answer without a detailed description.