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.
They refer to this handgun as the browning model BDA (browning double action auto) pistol.
No such model made by Browning.
The standard M1911 Government model pistol has an overall length of 8.25 inches (210mm) and a barrel length of 5.03 inches (127mm).
This would be a Browning Challenger .22 pistol made in 1970.
FN Browning model 1910 pistol a .32 caliber.
You will have to call Browning.
Your Browning model nomad 22cal pistol was made in the year 1971.
Blue Book of Gun Values
Impossible to answer without a serial number.
If the model you have is a model 1908 hammerless model? It was made by colt in 1915.
We need the model- there is more than 1 Browning .380 pistol.
$500