A few hundred to a few thousand depending on condition, box, papers, etc..
Winchester did not make firearms in Belgium
very high
To determine the exact value of a 1892 Eclipse Meteor Belgium double barrel 20 gauge shotgun a number of factors would need to be taken into consideration. Most importantly, the condition of the shotgun.
100-10000 or more depending on model
Requires professional evaluation.
To determine the exact value of a Browning automatic 20 gauge shotgun made in Belgium, a couple factors would need to be taken into consideration. Some of these things are the age and condition of the shotgun.
Based on description 100-500
How much is a Browning Sweet 16 gold trigger shotgun worth?
50-500 uSD
Impossible to answer if you don't at least say if it is a rifle, shotgun or handgun.
What_is_the_value_of_J_Manton_and_Co_double_barrel_shotgun_12_gauge_serial_number_180_with_no_model_number
If it is an auto-5 shotgun than 1938.