No way to answer without the serial number.
Exactly how is the pistol marked? 9mm browning serial number 72C44338
see Browning.com (HiPower 9mm) 1977
Browning.com has a sn function under customer service
1968
See link.
1971
500 USD
$450-$750
browning used the last two digits of the year before the serial number on the 9mm from 1970 until 1976 so your 9mm was made in 1973
Browning's customer service can assist you.
You must call Browning.
1990.