100-300 USD
Remington didn't make a Model 12-2 but Model 12-A-F & and CS. But the value is GREATLY dependent on condition without that it's anywhere from a 200-1,200 gun NIB.
100-400 USD
Tough question, the Remington model 550 is a .22 rifle not a 12 gauge shotgun.
Depends on model and age.
The shotgun is like new..
i seached the net, seens i have a model 12 Remington .22 and it seems to be going for about 300+ American
Remington automaster model 87 12 gauge is one of those cases that has got greatest importance, and that involves professional assistance regarding
About 275 in good condition
Well there is no Remington Model 12 shotgun, a model 12 is a 22 lr, they did make a smoothbore but it would have said so. A smoothbore model 12 is rare and valuable but I doubt that's what you have if it doesn't say smoothbore it's probably shot out.
100-350
100-300 USD
100-1000 depending on specifics