... Been detecting on and off since my Dad and I got an old BFO White's Coinmaster back in the day.
Welcome to Fmdf. What years was it that your dad had the BFO ? What type places did he take it and what type finds ?
It was a Coinmaster 2 - got it in 1968. Had the red 6 inch coil. I still have it. Found some coins, tokens and a lot of junk. It didn't have a lot of depth and didn't work too well in Northern New York due to the high amounts of iron ore in the ground. Years later I had better luck when I used it on beaches in Florida and Texas.
Photos below are very close to what it looks like.