Get an owner's manual or take it to a gunsmith.
No
Semi-automatic Saturday Nite Special (Cheap Handgun) An inexpensive .380 caliber automatic pistol. boat anchor
Semi-automatic pistols can vary from 100-1000.
1928
Simple answer, No.
1972
.380 auto is about .355 and 7.65mm is .308 .
Two different sizes. .32 is .320 inches in diameter, .380 is, well, .380. There are different .32 cartridges for revolvers and automatic pistols, the .380 is for automatic pistols. The .380 also has more power than a .32 auto.
A Colt 380 hammerless with that serial number was made in 1915.
200 USD
Best to have a gunsmith teach you how.
You need a firearms instructor