This is a Winchester model 1893, 12 gauge pump shotgun. 
It is a 5 shot and has a 30" plain barrel, the metal retains 70% of finish and 
wood has been refinished correctly
It is a black powder and is very rare(only 31,000 made)
This gun was manufactered between 1893-1897
There is a crack in the wood, front of pump
The serial number reads WRACO