If not a refinish, 500 or so.
This means there is no "choke" or narrowing of the barrel at the muzzle.
bought this revolver today seems to be in great condition
model stamped inside cylinder housing near barrel.
On the muzzle-end of the barrel and recoil spring before the slide is re-attached.
Cylinder Bore meaning the barrels are not choked (narrowed at the muzzle).
This is a quirky gun. The barrel and "cylinder" are one piece. To open for loading, push the cylinder to the right. You'll find that the barrel and cylinder both swing out so you can load.
remove pin from end of magazine tube at barrel muzzle, pull magazine tube from forearm, forearm is now ready to be lifted off barrel
anywhere from $250 to $1200. a mildly used shotgun like the model 12 with no scratches and very good bluing that has a clean barrel would fetch about $$800.
matte/dull
The Ithaca Model 87 uses the Winchoke system model III tubes. The Model III tubes fit flush with the barrel muzzle. Other Winchoke tubes should also fit.
I purchased a Blued Model 689 with moderate wear; it had been a carry pistol for a police officer for many years and the bluing had worn off the barrel and the sides of the cylinder. The handle is well worn. So in moderate used condition mine was $250 in late 2006. Given the condition you may be able to fetch more for it. Good Luck, -Jeremy in Houston
100-1000 USD depending on condition, accessories, papers, box, history.