What does the hallmark SGH mean on a gold ring?

Where was the Essex 22 Caliber single-shot bolt action rifle manufactured? What is the best 22 caliber pistol? Can you fire a 45 long colt in a 454 casull? What is a western fields model 770A EHM worth? How do you take apart the bolt assembly on an Ithaca Model 37 shotgun? What ammo is cheaper 9mm or 45? How do you find out about a 12 gauge shotgun Stimulator made by the Bridge Gun Company serial number 2307? Gun barrel rifling? How do you kill a vampire with a gun? What is the Value of V-350 slide action crosman air rifle? Where is the NRA headquartered? How is a fully-automatic firearm different from a semi-automatic firearm? You have Ithica Deerslayer Model 37 SN371478217 etching very good any history or value for this old gun? Need repair parts daisy champion air rifle? How do you remove a weaver side mount from a vintage j 4 scope? How old do you have to be to go to a gun show? How much is a revelation model 350a 16 gauge worth? What is the value of a ruger 1022 carbine 22lr rifle? How do you tell what caliber my steyr m95 m? Is there a difference between a 38 caliber bullet and a 380 caliber bullet?