I have a belgium 12 gauge browning shot gun with the serial #B67119. I am trying to find out what type or size choke it has
All guns should have the information stamped onto the barrel. Most of the time it is near the action. Look on the barrel of your shot gun and it should tell you the make, model, caliber (or in your case with a shot gun) the gauge, for shot guns the size of shell the gun takes, and finally the choke the shot gun has. If it is a screw on choke it should saw on it.
To determine different shot patterns
Either a full choke,or extra full choke shotgun barrel.
How much the shot is constricted as it leaves the barrel.
You can't tell by the serial number. Go to http://www.browning.com/customerservice/qna/detail.asp?ID=100 for choke specifications.
IF ANY SHOT GUN HAS A MOD CHOKE OR IMPROVED ITS OK, ONLY FULL CHOKE WILL NOT BE SAFE, BULGING IN THE BARREL MAY OCCUR.
What is the value of a Spencer Gun Company 12 guage choke shot gun serial number A203136?
You might find them in the Blue Book of Gun Values.
SHOT Show
stupid nobody knows the answer to that.
50-100 or so