Basically impossible to value with no other information.
see Browning.com (HiPower 9mm) 1977
Made in the early 1950's, before the HiPower was officially introduced to the US market. Value would be around $2500.
$146.
50-500 usd
100-800 usd
Value of a Browning Hi Power in caliber 9mm Luger (9mm parabellum) will vary, depending on EXACT model (thee were several) markings, and condition. It may be as low as $300, or over a $1000 for the scarce specimens.
100-800 usd
100-5000 USD
i sold my high power 9mm pistol for $450 last year.
The value of a Browning 9mm 1945 serial number 693398a depends on its condition. This gun in excellent condition is valued between 600.00 and 800.00 as of 2014.
100-1000usd
100-500 usd