(In my house, the meter in inside the house, and functions AS the 'main' ..places differ.)

If you have, or can find or take,,, a picture of what the inside of the handle looks like, together with image of the basic handle that shows how it is attached, it might be possible to advise what to yank on, pound on, pry on...etc. An older faucet of that sort should not resist that much.... but there are so many varieties....