Made in 1981.
The 2 letters PY found in the serial number sequence indicate that your Browning High Power was made in the year 1982.
You will have to call Browning with the serial number to find out.
I saw a Browning Belgium High Power sell on Sunday 5/17/009 for $750.00 with box and paperwork. The seller could not claim that the gun was unfired, but if it had been fired, it had not been fired much.
1972. Reference the following website for information on manfucture dates for Browning Hi Power pistols. http://www.browning.com/services/dategun/detail.asp?id=35
Your browning hi-power was made by browning in 1967.
Your browning high power was produced in 1980.
FN Herstall Belgium should have the info that you need.They produced the high power during the world war II years,when the factory was under Nazi control.
I've seen them between $700 and $1000 i have one it's a great gun
1993
SN dates to 1966.
Browning High Power