Help... I'm new to kegging and just got my first kegs. I got a deal on three of these soda kegs on craigslist. When I showed up to pick them up, they were not pin lock, ball lock, or US Sanke. See pics. I went ahead and bought them because they were cheap and in great condition. I know that they were used for homebrewing in the past because there are beer styles and dates written on them. The guy I bought them from didn't know. They were left in the house that he just moved into. I'm guessing they are European style 1/6 barrel commercial kegs? What type of kegs are these, and does anyone know what exact type of couplers I will need to purchase? will I be able to find couplers and fittings for them? Does anyone have any experience with these? Any info would be great.