1970. Value depends on condition and can range from 0-300 USD.
197594V
50-500 USD or so
50-500 usd
Basically impossible to value with just the serial number.
Frame
The PZ found in the middle of your serial number indicated that your browning light twenty auto-5 shotgun was made by browning in 1981.
50-450 usd
100-1000 usd
100-400 USD
0-450 usd
1967. Value around $850
50-300 usd