You will have to contact Remington.
SN's were not required before 1968
50-500 usd
Yes, Remington makes the 700 in that caliber.
Many shotguns & .22 caliber rifles manufactured before 1968 did not have serial numbers. This would include your Rem. 512
Your Remington model 1903-A3 was made in the year 1942.It was chambered in the caliber 30-06.
Manufactured 1925
Impossible to tell unless you have the factory records.
1932-1935 - see Remington Society link
You will have to contact Remington.
$425 depending on exact model, caliber and condition. Serial number has no bearing on any of that.
$425 depending on exact model, caliber and condition. Serial number has no bearing on any of that.
1918
400 USD
$500 up
SN's were not required before 1968
425.00 to 450.00