Which model, what condition?
Depends greatly on which rolling block, there's to many to specify them all serial/date.
Ilion, NY
The address of the Remington Arms Co. is: 14 Hoefler Ave, Ilion, NY 13357
Ilion, New York, USA
Ilion, NY
Start with these guys... http://remingtonsociety.com/rsa/research/Model51
E. Remington and Sons (predecessor to Remington Arms Co) manufactured firearms in Ilion, New York, from 1860 to 1888.
Try the Remington Society of America TDM
Is it a pump? sounds like it's a early unmarked model 12 made in 1911.
The web address of the Remington Arms Co. is: http://www.remington.com
All Remington model 870 shotguns were made in the Unites states.The Remington plant was located in Ilion,New York.
Depends on original condition, original grips?, also which variation. That's a Type II 3rd Model, there's 6 variations can only be determined by a picture of the top of the barrel.