This is a Belgian made A5 which is a Standard weight 16 gauge made in 1956.
Browning offers history letters.
Exactly how is the pistol marked? 9mm browning serial number 72C44338
If it is marked Light 12, that is an incomplete serial number.
Could it be that your browning hi-power is marked 70C19171? If it is then it was made in 1970.
Where will be marked on the barrel/receiver.
The caliber will be marked on the Barrel, the year made is 1983
The caliber should be marked on the slide.
It should be marked as to where it was made.
Where will be marked on the barrel or receiver. When is 1977.
You will have to get it lettered from Browning to get that information
That is not the complete serial number. Value is going to depend on condition, and without further information is impossible to guess.
Since you did not provide the serial number, you can check the Browning web site (has serial number information on it). Also, the Blue Book of Gun Values has serial number information on Browning's.