It's not possible to answer the question as asked. There are too many types, models and variations of these guns to consider. These guns can sell for as little as a few hundred dollars up to thousands, depending on what model it is, when it was made and condition. Condition is everything when appraising a gun. As always, it's recommended that you have it appraised at a Gun Shop or qualified professional.
1973 Belgium
100-1000 USD and up depending on specifics
Impossible to answer without a detailed description of all features, condition and markings.
1973
1973
YEAR 1973
Your serial number indicates that you have a Browning BAR that was made in the year 1973 with the suffix of M73 after the serial number.
The exact value of a Browning 1973 U73 22 pistol made in Belgian is actually dependent on a number of factors. Most importantly, the condition of the pistol.
100-600 usd
Does not exist. The Citori did not start production until 1973.
If your Browning was made by FN in Belgium then it was made between 1969-1973.If it has made in Japan by Miroku,then it was made after 1973-1974.You may contact Browning/Winchester directly and they will assist you in dating your lever action rifle,s year of Manufacture.
500-700 usd