Value is too difficult to be accurate without seeing the gun. Condition which includes the amount of original finish and original configuration will determine value. Recommend taking it to a gun shop for appraisal.
You will have to contact Weatherby to find out.
Nice rifle
You will have to contact the Weatherby Collector's Association.
100-500 or so
The 300 Weatherby Magnum is a long action.
3500.00
I have had one since 1957 and am a left handed shooter, I feel it is a excellent rifle for a left hander due to the bottom eject, there are no doubt less expensive rifle available but you will not get hit in the face.
1000-10000 usd
BAR stands for Browning Automatic Rifle, not browning association rifle.
Custom proposition
It is a Vanguard.
100-700 usd