1955?
Would need the specific model number.
1950's-1960's
Not recommeded for the casual owner. Find a good gunsmith.
no
Would have been made after WW2 through the 1960's. Value up to $250.
No. There is a 583,17 made by High Standard though, look at the model # on the barrel again.
A Model 37 is a "pump", so a double barrel could not be a Model 37
For which make & model rifle??
There is a pin that has to be driven out. It passes thru the front section of bolt and is off-center
Disassemble to do what? To remove the trigger group you need to push out the two pins in the receiver to remove the trigger group. To remove the bolt you need to take the barrel off which requires an armorers barrel wrench.
It is marked on the barrel and begins 583. xxx