The one on the left looks like my "Old Shaky" from the late fifties. Made by Testrite. Mine had a Sears Tower label on it. Only for medium format, I think 6x6 was the max. On less your in a desert, free would be to much. Well, free for a first enlarger....
Never owned a Federal, the one on the right. It may be older, better built. But, gotta be really cheap. Beseler and Omega 4x5s are unbelievably inexpensive, and speaking for the Beseler, very sturdy, great design, and lots of accessories available.
Don't know where your from but if your near the auction house listed, maybe consider picking one up either in St. Louis, Chicago, or smaller nearby cities.
JMHO