No sn and no description = no way to answer.
100-1000 usd
100-1000 usd
100-700 usd
No way to answer without the sn and a detailed description.
£900 - £1000 in mint condition
50-500 USD or so
50-300 usd
Try the links below
100-1000 USD depending on condition, accessories, etc..
With no other information; 100-10000 USD
Your browning model auto-5 magnum 12ga shotgun was made by FN for browning in 1965.