You don't provide any details on overall condition, barrel length, caliber, markings, accessories, etc.. A broad range would be a few hundred to multiple thousands.
No
non pitting
Pitting potential is the potential where the pitting start and this is noticed when the current is suddenly increased that also mean below this value, now pitting corrosion will initiate Many parameters can effluence the pitting potential such as Temperature, halides ions, surface finishing of the alloy and also state of the electrolyte , is it flowing or stagnant.
Pitting edema is a swollen area that will give when pressed and retain a depression for a minute , or so.
Pitting= Too high surface pressure on gear or lack of lubrication
Pitting is when there are small holes starting to appear in steel often caused by corrosion/rust
50 Cents
Your serial number indicates that your Winchester model 12 shotgun was made in the year 1920.The value cannot be determined without a much more detailed description of your shotguns overall condition,to include the amount of original blueing left on the metal,original finish remaining on the wood,and barrel type(plain,or solid matte rib,or vent rib barrel).Barrel condition(any pitting in the bore)etc.
Frog pitting is a procedure used to kill frogs at ethical standards required by organizations in order to conduct research on animals
edema
The easiest method for pitting cherries is to use a cherry pitter tool, which can quickly remove the pits from the cherries with minimal effort.
cavitation is the reason