If it's a Winchester, a few hundred to multiple thousands depending on EXACT configuration, condition, box, papers, accessories, history.
Which model do you have?
What year and what is the value of your savage model 28 12 guage full serial # 19495?
1000.00
Impossible to answer without knowing which model.
Impossible to answer without knowing model.
100 max
100-1000 USD
The exact value of a Stevens 12 gauge model g20a is actually dependent on a couple things. Some of these things would be the age and condition.
what year was model 620- serial# 11240 made
Who made it? What caliber/gauge?
50-500 usd
Impossible to answer without knowing which model and its condition.