As with any firearm, it is not possible to accurately appraise a gun without seeing it. Condition, and original configuration will determine value. Other factors such as rarity of caliber or guage and higher grades have significant impact on value. Recommend that you see a local gun dealer for an appraisal. You can also do your own investigation by looking at other models being sold that are in the same condition as yours. Try the gunbroker.com or a periodical called "The Gun List" You can also reference the Blue Book of Gun Values which can be purchased on line at various retailers.
Could be a rifle, shotgun or handgun.
No model number. Made in 1969. High Power is what it is called
100-1000+ depending on specifics
Your browning hi-power was made by browning in 1967.
You must call Browning.
Your browning high power was produced in 1980.
1993
This was made in 1981. It is a High Power 9mm. You can find many internet references on the history of the model. Yours is fairly common from the 1980s. There are books on the Hi Power as well.
SN dates to 1966.
Browning High Power
Browning's web site has a sn search function.
Proofhouse.com has Browning sn info.