I believe that's a John Deere 415A plow, mid 50's to early 60's vintage. Some parts are still available through aftermarket sources, but getting scarce. Issues with that plow are; Not much throat clearance. That results in plugging in crop residue or heavy sod. Type HHS bottoms tend to pull harder than some other brands of same era.
I used a 3-bottom 415A for years.