Value of a 51 (like all collectible firearms) is greatly dependent on condition, condition, and condition. For the most part the 2 calibers are generally worth the same value. A 100% (mint) 51 is currently worth in the $600 dollar range if however you have the original box and accessories it could add 2-300 to it's value. Once the condition drops to 90% is nearly down to half of it's value and drops quickly down in value for lesser conditions. The 51 is as I mentioned is a collectible unless it's a complete beater it's always worth at least $200.
75-750 USD
50-600 USD
remington model 512 value, as with all items, depends on condition. how good in the finish, wood, bore. Any rust/pitts. between $75 - $100 if good
Remington's website has what you are looking for.
Depends on condition that is key, from $200 to $800 NEW IN BOX w/ accessories.
What Model 51 pistol or a rifle and what model?
What is value of a US Remington Model 03-A3?
Depends on condition, condition, and condition, anywhere from 100.- to 800.- for like new in box.
Depends on condition, condition, and condition... From $350 to $1,000 for like new in the box.
No such model number in the Remington line
What is the value of a remington 1100 12ga serial # l869590v
GREATLY depends on condition (condition and condition) anywhere from $100-$800 for like new in the box.