Without a model number and the condition of the gun, impossible to answer.
need a diagram of sears model 66m shotgun for takedown
No way to answer. Which shotgun? We need a model number- Sears sold shotguns for over 80 years, and there were a LOT of different guns, different values.
model273-510770
about $300. if in good shape
No published sn data.
The Sears Roebuck Model 20 12 gauge shotgun, serial number 5832006 is valued at $200 in very good condition. It good condition, it is valued at $125.
50-200 usd
The JC Higgins 583.16 is a bolt-action 12ga shotgun made for Sears by High Standard in 1948/1949.
There was one at an on-line auction but it was a 12ga. It went for $160. It was Aumann's auction or something like that.
Your Sears model 200 shotgun was made by Winchester.The model 1200 Winchester is the same firearm.
Probably Mossberg