What does gtv mean stamped on a ring?

What is the date of manufacture of a Winchester 74 with serial number 19451? What is the scope of office procedures? What to clean nickel plated hand guns with? What did model 83B look like mossberg 410 gauge shotgun? What is the value of a Winchester pump action 22? Did ward and sons make a 14 gauge shot gun? How many types of caliber are there now? Philadelphia derringer with serial number 0028782 is it authentic? What year was a Winchester model 94 serial number 4602640 made? Can a 357 magnum shoot any 38 special plus p caliber bullet? What bullet grain and powders yields the best shot group at 100 yds I used hornady 160 gn with lever evolution powder at 35.5 gns still going to try other bullet weights 150 federal was ok? How much is 1907 jc Stevens 22 rifle? Where can you get a manual for a 270 Win J C Higgins Model 51? Do you need a background check for a black powder gun in Pa? What is the value of Winchester 30 30 rifle? How do you get the Remington baikal to eject low power shells? What is the value of a Winchester model 12 manufacture date 1922? What is the value of pellet gun model 38T made in Fairport NY? How old do you have to be to buy ammunition? What kind of weapon is an AK-47?