The 69C prefix to your serial number indicates that it was produced in the year 1969.
Made in 1981
What is your question?
The caliber should be marked on the slide.
75-450 or so
50-350 usd
If you mean a 22LR, 200or so
You need a firearms instructor
Depending on how old or new it is - on the slide, frame, barrel hood.
There have been several that fit that description.
50-300 usd
50 - 400 usd
9x18 is the Makarov cartridge. Browning never made a firearm chambered for it. They did, however, make such a pistol in 9x17 - otherwise known as the .380 Automatic Colt Pistol. It was actually the Beretta 84 'Cheetah', badge engineered and marketed as the Browning BDA 380.