really hard to say with your description , factors are grade of the gun, condition, and originlity. your gun is most likely a grade one without gold trigger and heavy inlay. if this is the case your looking at 350- 1000 dollars depending on the condition. higher grade guns bring considerably more. also the box and paperwork play an important part in the value of the gun. hope this in some way helps.
what is your question?
No way to price a weapon with just the serial number and no description.
1975
Up to 1000 USD
100-1000 and up depending on specifics
Impossible to value with only a serial number.
SN were not required before 1968
50-5000 USD or more depending on specifics.
0-500 USD depending on condition.
The Browning. No Contest there.
You will have to call Browning.
You will have to call Browning.