Requires professional appraisal.
Your browning hi-power was made by browning in 1967.
You must call Browning.
Your browning high power was produced in 1980.
1993
SN dates to 1966.
Browning High Power
Browning's web site has a sn search function.
Proofhouse.com has Browning sn info.
Your browning high power was made during the years 1945-1954 in which browning and FN of belguim did not keep track of the production figures of the high power.The records began with serial number 72251 which was in 1955.
100-500 or so
The 2 letters PY found in the serial number sequence indicate that your Browning High Power was made in the year 1982.
100-700 usd