Hi Snaparxon - about half and half. Pearl Harbor shipyard workers used a lot of Proto tools that have ended up in swap meets or garage sales. The rest I got from eBay or friends. And, it’s taken decades to acquire this stuff. I was introduced to Proto tools in 1984 and have been a fanboy ever since. They’re not as well chromed and as nice as Snap-on, but much more affordable and convenient to get. This is important when you live in a high cost of living, high taxed, liberal hippie State like Hawaii. But, bottom line, Proto tools are tough as nails.